Apple silicon explained

Apple silicon refers to a series of system on a chip (SoC) and system in a package (SiP) processors designed by Apple Inc., mainly using the ARM architecture. They are the basis of Mac, iPhone, iPad, Apple TV, Apple Watch, AirPods, AirTag, HomePod, and Apple Vision Pro devices.

Apple announced its plan to switch Mac computers from Intel processors to Apple silicon at WWDC 2020 on June 22, 2020.^{[1] [2]} The first Macs built with the Apple M1 chip were unveiled on November 10, 2020. As of June 2023, the entire Mac lineup uses Apple silicon chips.

Apple fully controls the integration of Apple silicon chips with the company's hardware and software products. Johny Srouji is in charge of Apple's silicon design.^[3] Manufacturing of the chips is outsourced to semiconductor contract manufacturers such as TSMC.

A series

The "A" series is a family of SoCs used in the iPhone, certain iPad models, and the Apple TV. "A" series chips were also used in the discontinued iPod Touch line and the original HomePod. They integrate one or more ARM-based processing cores (CPU), a graphics processing unit (GPU), cache memory and other electronics necessary to provide mobile computing functions within a single physical package.^[4]

Apple A4

See main article: Apple A4.

The Apple A4 is a PoP SoC manufactured by Samsung, the first SoC Apple designed in-house.^[5] It combines an ARM Cortex-A8 CPU also used in Samsung's S5PC110A01 SoC^{[6] [7]} and a PowerVR SGX 535 graphics processor (GPU),^{[8] [9]} all built on Samsung's 45-nanometer silicon chip fabrication process.^{[10] [11]} The design emphasizes power efficiency.^[12] The A4 commercially debuted in 2010, in Apple's iPad tablet,^[13] and was later used in the iPhone 4 smartphone,^[14] the fourth-generation iPod Touch, and the 2nd-generation Apple TV.^[15]

The Cortex-A8 core used in the A4, dubbed "Hummingbird", is thought to use performance improvements developed by Samsung in collaboration with chip designer Intrinsity, which was subsequently acquired by Apple^{[16] [17]} It can run at far higher clock rates than other Cortex-A8 designs yet remains fully compatible with the design provided by ARM.^[18] The A4 runs at different speeds in different products: 1 GHz in the first iPads,^[19] 800 MHz in the iPhone 4 and fourth-generation iPod Touch, and an undisclosed speed in the 2nd-generation Apple TV.

The A4's SGX535 GPU could theoretically push 35 million polygons per second and 500 million pixels per second, although real-world performance may be considerably less.^[20] Other performance improvements include additional L2 cache.

The A4 processor package does not contain RAM, but supports PoP installation. The 1st-generation iPad, fourth-generation iPod Touch,^[21] and the 2nd-generation Apple TV^[22] have an A4 mounted with two low-power 128 MB DDR SDRAM chips (totaling 256 MB), while the iPhone 4 has two 256 MB packages for a total of 512 MB.^{[23] [24] [25]} The RAM is connected to the processor using ARM's 64-bit-wide AMBA 3 AXI bus. To give the iPad high graphics bandwidth, the width of the RAM data bus is double that used in previous ARM11- and ARM9-based Apple devices.^[26]

Apple A5

See main article: Apple A5.

The Apple A5 is an SoC manufactured by Samsung^[27] that replaced the A4. The chip commercially debuted with the release of Apple's iPad 2 tablet in March 2011,^[28] followed by its release in the iPhone 4S smartphone later that year. Compared to the A4, the A5 CPU "can do twice the work" and the GPU has "up to nine times the graphics performance",^[29] according to Apple.

The A5 contains a dual-core ARM Cortex-A9 CPU^[30] with ARM's advanced SIMD extension, marketed as NEON, and a dual core PowerVR SGX543MP2 GPU. This GPU can push between 70 and 80 million polygons/second and has a pixel fill rate of 2 billion pixels/second. The iPad 2's technical specifications page says the A5 is clocked at 1 GHz,^[31] though it can adjust its frequency to save battery life.^[32] The clock speed of the unit used in the iPhone 4S is 800 MHz. Like the A4, the A5 process size is 45 nm.^[33]

An updated 32 nm version of the A5 processor was used in the 3rd-generation Apple TV, the fifth-generation iPod Touch, the iPad Mini, and the new version of iPad 2 (version iPad2,4).^[34] The chip in the Apple TV has one core locked.^{[35] [36]} Markings on the square package indicate that it is named APL2498, and in software, the chip is called S5L8942. The 32 nm variant of the A5 provides around 15% better battery life during web browsing, 30% better when playing 3D games and about 20% better battery life during video playback.^[37]

In March 2013, Apple released an updated version of the 3rd-generation Apple TV (Rev A, model A1469) containing a smaller, single-core version of the A5 processor. Unlike the other A5 variants, this version of the A5 is not a PoP, having no stacked RAM. The chip is very small, just 6.1×6.2 mm, but as the decrease in size is not due to a decrease in feature size (it is still on a 32 nm fabrication process), this indicates that this A5 revision is of a new design.^[38] Markings tell that it is named APL7498, and in software, the chip is called S5L8947.^{[39] [40]}

Apple A5X

See main article: Apple A5X.

The Apple A5X is an SoC announced on March 7, 2012, at the launch of the third-generation iPad. It is a high-performance variant of the Apple A5; Apple claims it has twice the graphics performance of the A5.^[41] It was superseded in the fourth-generation iPad by the Apple A6X processor.

The A5X has a quad-core graphics unit (PowerVR SGX543MP4) instead of the previous dual-core as well as a quad-channel memory controller that provides a memory bandwidth of 12.8 GB/s, roughly three times more than in the A5. The added graphics cores and extra memory channels add up to a very large die size of 165 mm²,^[42] for example twice the size of Nvidia Tegra 3.^[43] This is mainly due to the large PowerVR SGX543MP4 GPU. The clock frequency of the dual ARM Cortex-A9 cores have been shown to operate at the same 1 GHz frequency as in A5.^[44] The RAM in A5X is separate from the main CPU package.^[45]

Apple A6

See main article: Apple A6.

The Apple A6 is a PoP SoC introduced on September 12, 2012, at the launch of the iPhone 5, then a year later was inherited by its minor successor the iPhone 5C. Apple states that it is up to twice as fast and has up to twice the graphics power compared to its predecessor the Apple A5. It is 22% smaller and draws less power than the 45 nm A5.^[46]

The A6 is said to use a 1.3 GHz custom Apple-designed ARMv7 based dual-core CPU, called Swift,^[47] rather than a licensed CPU from ARM like in previous designs, and an integrated 266 MHz triple-core PowerVR SGX 543MP3^[48] graphics processing unit (GPU). The Swift core in the A6 uses a new tweaked instruction set, ARMv7s, featuring some elements of the ARM Cortex-A15 such as support for the Advanced SIMD v2, and VFPv4. The A6 is manufactured by Samsung on a high-κ metal gate (HKMG) 32 nm process.^[49]

Apple A6X

See main article: Apple A6X. Apple A6X is an SoC introduced at the launch of the fourth-generation iPad on October 23, 2012. It is a high-performance variant of the Apple A6. Apple claims the A6X has twice the CPU performance and up to twice the graphics performance of its predecessor, the Apple A5X.^[50]

Like the A6, this SoC continues to use the dual-core Swift CPU, but it has a new quad core GPU, quad channel memory and slightly higher 1.4 GHz CPU clock rate.^[51] It uses an integrated quad-core PowerVR SGX 554MP4 graphics processing unit (GPU) running at 300 MHz and a quad-channel memory subsystem.^[52] Compared to the A6 the A6X is 30% larger, but it continues to be manufactured by Samsung on a high-κ metal gate (HKMG) 32 nm process.

Apple A7

See main article: Apple A7.

The Apple A7 is a 64-bit PoP SoC whose first appearance was in the iPhone 5S, which was introduced on September 10, 2013. The chip would also be used in the iPad Air, iPad Mini 2 and iPad Mini 3. Apple states that it is up to twice as fast and has up to twice the graphics power compared to its predecessor the Apple A6.^[53] The Apple A7 chip is the first 64-bit chip to be used in a smartphone and later a tablet computer.^[54]

The A7 features an Apple-designed 1.3^[55] –1.4^[56]  GHz 64-bit^[57] ARMv8-A^{[58] [59]} dual-core CPU, called Cyclone, and an integrated PowerVR G6430 GPU in a four cluster configuration.^[60] The ARMv8-A architecture doubles the number of registers of the A7 compared to the A6.^[61] It now has 31 general-purpose registers that are each 64-bits wide and 32 floating-point/NEON registers that are each 128-bits wide. The A7 is manufactured by Samsung on a high-κ metal gate (HKMG) 28 nm process^[62] and the chip includes over 1 billion transistors on a die 102 mm² in size.

Apple A8

See main article: Apple A8.

The Apple A8 is a 64-bit PoP SoC manufactured by TSMC. Its first appearance was in the iPhone 6 and iPhone 6 Plus, which were introduced on September 9, 2014.^[63] A year later it would drive the iPad Mini 4. Apple states that it has 25% more CPU performance and 50% more graphics performance while drawing only 50% of the power compared to its predecessor, the Apple A7.^[64] On February 9, 2018, Apple released the HomePod, which is powered by an Apple A8 with 1 GB of RAM.^[65]

The A8 features an Apple-designed 1.4^[66]  GHz 64-bit^[67] ARMv8-A dual-core CPU, and an integrated custom PowerVR GX6450 GPU in a four cluster configuration. The GPU features custom shader cores and compiler.^[68] The A8 is manufactured on a 20 nm process^[69] by TSMC,^[70] which replaced Samsung as the manufacturer of Apple's mobile device processors. It contains 2 billion transistors. Despite that being double the number of transistors compared to the A7, its physical size has been reduced by 13% to 89 mm² (consistent with a shrink only, not known to be a new microarchitecture).^[71]

Apple A8X

See main article: Apple A8X.

The Apple A8X is a 64-bit SoC introduced at the launch of the iPad Air 2 on October 16, 2014.^[72] It is a high performance variant of the Apple A8. Apple states that it has 40% more CPU performance and 2.5 times the graphics performance of its predecessor, the Apple A7.^[73]

Unlike the A8, this SoC uses a triple-core CPU, a new octa-core GPU, dual channel memory and slightly higher 1.5 GHz CPU clock rate.^[74] It uses an integrated custom octa-core PowerVR GXA6850 graphics processing unit (GPU) running at 450 MHz and a dual-channel memory subsystem. It is manufactured by TSMC on their 20 nm fabrication process, and consists of 3 billion transistors.

Apple A9

See main article: Apple A9.

The Apple A9 is a 64-bit ARM-based SoC that first appeared in the iPhone 6S and 6S Plus, which were introduced on September 9, 2015.^[75] Apple states that it has 70% more CPU performance and 90% more graphics performance compared to its predecessor, the Apple A8. It is dual sourced, a first for an Apple SoC; it is manufactured by Samsung on their 14 nm FinFET LPE process and by TSMC on their 16 nm FinFET process. It was subsequently included in the first-generation iPhone SE, and the iPad (5th generation). The Apple A9 was the last CPU that Apple manufactured through a contract with Samsung, as all A-series chips after are manufactured by TSMC.

Apple A9X

See main article: Apple A9X.

The Apple A9X is a 64-bit SoC that was announced on September 9, 2015, and released on November 11, 2015, and first appeared in the iPad Pro.^[76] It offers 80% more CPU performance and two times the GPU performance of its predecessor, the Apple A8X. It is manufactured by TSMC using a 16 nm FinFET process.^[77]

Apple A10 Fusion

See main article: Apple A10.

The Apple A10 Fusion is a 64-bit ARM-based SoC that first appeared in the iPhone 7 and 7 Plus, which were introduced on September 7, 2016.^[78] The A10 is also featured in the sixth-generation iPad, seventh-generation iPad and seventh-generation iPod Touch.^[79] It has a new ARM big.LITTLE quad core design with two high performance cores, and two smaller highly efficient cores. It is 40% faster than the A9, with 50% faster graphics. It is manufactured by TSMC on their 16 nm FinFET process.

Apple A10X Fusion

See main article: Apple A10X.

The Apple A10X Fusion is a 64-bit ARM-based SoC that first appeared in the 10.5" iPad Pro and the second generation of the 12.9" iPad Pro, which were both announced on June 5, 2017.^[80] It is a variant of the A10 and Apple claims that it has 30 percent faster CPU performance and 40 percent faster GPU performance than its predecessor, the A9X. On September 12, 2017, Apple announced that the Apple TV 4K would be powered by an A10X chip. It is made by TSMC on their 10 nm FinFET process.^[81]

Apple A11 Bionic

See main article: Apple A11.

The Apple A11 Bionic is a 64-bit ARM-based SoC^[82] that first appeared in the iPhone 8, iPhone 8 Plus, and iPhone X, which were introduced on September 12, 2017. It has two high-performance cores, which are 25% faster than the A10 Fusion, four high-efficiency cores, which are 70% faster than the energy-efficient cores in the A10, and for the first time an Apple-designed three-core GPU with 30% faster graphics performance than the A10.^[83] It is also the first A-series chip to feature Apple's "Neural Engine," which enhances artificial intelligence and machine learning processes.^[84]

Apple A12 Bionic

See main article: Apple A12.

The Apple A12 Bionic is a 64-bit ARM-based SoC that first appeared in the iPhone XS, XS Max and XR, which were introduced on September 12, 2018. It is also used in the third-generation iPad Air, fifth-generation iPad Mini, and the eighth-generation iPad. It has two high-performance cores, which are 15% faster than the A11 Bionic, and four high-efficiency cores, which have 50% lower power usage than the energy-efficient cores in the A11 Bionic.^[85] The A12 is manufactured by TSMC using a 7 nm^[86] FinFET process, the first to ship in a smartphone.^{[87] [88]} It is also used in the 6th generation Apple TV.

Apple A12X Bionic

See main article: Apple A12X.

The Apple A12X Bionic is a 64-bit ARM-based SoC that first appeared in the 11.0" iPad Pro and the third generation of the 12.9" iPad Pro, which were both announced on October 30, 2018.^[89] It offers 35% faster single-core and 90% faster multi-core CPU performance than its predecessor, the A10X. It has four high-performance cores and four high-efficiency cores. The A12X is manufactured by TSMC using a 7 nm FinFET process.

Apple A12Z Bionic

The Apple A12Z Bionic is an updated version of the A12X Bionic, first appearing in the fourth generation iPad Pro, which was announced on March 18, 2020.^[90] It adds an additional GPU core, compared to the A12X, for improved graphics performance.^[91] The A12Z is also used in the Developer Transition Kit prototype computer that helps developers prepare their software for Macs based on Apple silicon.^[92]

Apple A13 Bionic

See main article: Apple A13.

The Apple A13 Bionic is a 64-bit ARM-based SoC that first appeared in the iPhone 11, 11 Pro, and 11 Pro Max, which were introduced on September 10, 2019. It is also featured in the second-generation iPhone SE (released April 15, 2020), the 9th generation iPad (announced September 14, 2021) and in the Studio Display (announced March 8, 2022)

The entire A13 SoC features a total of 18 cores – a six-core CPU, four-core GPU, and an eight-core Neural Engine processor, which is dedicated to handling on-board machine learning processes; four of the six cores on the CPU are low-powered cores that are dedicated to handling less CPU-intensive operations, such as voice calls, browsing the Web, and sending messages, while two higher-performance cores are used only for more CPU-intensive processes, such as recording 4K video or playing a video game.^[93]

Apple A14 Bionic

See main article: Apple A14.

The Apple A14 Bionic is a 64-bit ARM-based SoC that first appeared in the fourth-generation iPad Air and iPhone 12, released on October 23, 2020. It is the first commercially available 5 nm chipset and it contains 11.8 billion transistors and a 16-core AI processor.^[94] It includes Samsung LPDDR4X DRAM, a 6-core CPU, and 4-Core GPU with real time machine learning capabilities. It was later used in the tenth-generation iPad, released on October 26, 2022.

Apple A15 Bionic

See main article: Apple A15.

The Apple A15 Bionic is a 64-bit ARM-based SoC that first appeared in the iPhone 13, unveiled on September 14, 2021. The A15 is built on a 5-nanometer manufacturing process with 15 billion transistors. It has 2 high-performance processing cores, 4 high-efficiency cores, a new 5-core graphics for iPhone 13 Pro series (4-core for iPhone 13 and 13 mini) processing unit, and a new 16-core Neural Engine capable of 15.8 trillion operations per second.^{[95] [96]} It is also used in the third-generation iPhone SE, iPhone 14, iPhone 14 Plus and the sixth-generation iPad Mini.^[97]

Apple A16 Bionic

See main article: Apple A16.

The Apple A16 Bionic is a 64-bit ARM-based SoC that first appeared in the iPhone 14 Pro, unveiled on September 7, 2022. The A16 has 16 billion transistors and is built on TSMC's N4P fabrication process, being touted by Apple as the first 4 nm processor in a smartphone.^{[98] [99]} However, N4 is an enhanced version of N5 technology, a de facto fourth-generation 5 nm manufacturing process.^{[100] [101] [102]} The chip has 2 high-performance processing cores, 4 high-efficiency cores and 5-core graphics for iPhone 14 Pro series. Memory is upgraded to LPDDR5 for 50% higher bandwidth and a 7% faster 16-core Neural Engine capable of 17 trillion operations per second. The chip was later used in the iPhone 15 and iPhone 15 Plus.^[103]

Apple A17 Pro

See main article: Apple A17.

The Apple A17 Pro is a 64-bit ARM-based SoC that first appeared in the iPhone 15 Pro, unveiled on September 12, 2023. It is Apple's first 3 nm SoC. The chip has 2 high-performance processing cores, 4 high-efficiency cores, a 6-core GPU for iPhone 15 Pro series, and a 16-core Neural Engine capable of 35 trillion operations per second. The GPU was described as their biggest redesign in the history of Apple GPUs, adding hardware accelerated ray tracing and mesh shading support.^[104]

Comparison of A series processors

General				Semiconductor technology				Computer architecture		CPU											GPU						AI accelerator		Memory technology					First release
Name	Codename	Part No.	Image	Node	Manufacturer	Transistors count	Die size	CPU ISA	Bit width	Performance core			Efficiency core			Overall cores	Cache				Vendor	Cores	SIMD EU count	FP32 ALU count	Frequency	FP32 FLOPS	Cores	OPS	Memory bus width	Total channel Bit per channel	Memory type	Theoretical bandwidth	Available capacity
										Core name	Cores	Core speed	Core name	Cores	Core speed		L1	L2	L3	SLC
	APL0098	S5L8900		90 nm ^[105]	Samsung		72 mm^2	ARMv6	32-bit	ARM11	1	412 MHz	Single-core	L1i: 16 KB L1d: 16 KB	PowerVR MBX Lite	1	1	8	60 MHz – 103 MHz	0.96 GFLOPS – 1.64 GFLOPS	16-bit	1 channel 16-bit/channel	LPDDR-266 (133.25  MHz)	533 MB/s	128 MB	June 29, 2007
	APL0278	S5L8720		65 nm			36 mm^2					533 MHz	103 MHz – 133 MHz		1.64 GFLOPs – 2.12 GFLOPS				32-bit	1 channel 32-bit/channel	1066 MB/s	July 11, 2008
	APL0298	S5L8920					71.8 mm^2	ARMv7		Cortex-A8		600 MHz	L1i: 32 KB L1d: 32 KB	256 KB	PowerVR SGX535 ^[106]		2	16			200 MHz	6.4 GFLOPS	LPDDR-400 (200 MHz)	1.6 GB/s	256 MB	June 19, 2009
	APL2298	S5L8922		45 nm			41.6 mm^2																			September 9, 2009
A4	APL0398	S5L8930					53.3 mm^2					800 MHz		512 KB					200 MHz – 250 MHz	6.4 GFLOPS – 8.0 GFLOPS	64-bit	2 channels 32-bit/channel		3.2 GB/s		April 3, 2010
												1.0 GHz
												800 MHz													512 MB
A5	APL0498	S5L8940					122.2 mm^2			Cortex-A9	2	800 MHz		Dual-core	1 MB	PowerVR SGX543 ^[107]	2	4	32	200 MHz			12.8 GFLOPS	LPDDR2-800 (400 MHz)		6.4 GB/s	March 11, 2011
												1.0 GHz
	APL2498	S5L8942		32 nm Hκ MG			69.6 mm^2					800 MHz															March 7, 2012
												1.0 GHz
											2			Dual-core
	APL7498	S5L8947					37.8 mm^2				1			Single-core													January 28, 2013
A5X	APL5498	S5L8945		45 nm			165 mm^2				2			Dual-core			4	8	64		25.6 GFLOPS	128-bit	4 channels 32-bit/channel		12.8 GB/s	1 GB	March 16, 2012
A6	APL0598	S5L8950		32 nm Hκ MG ^[108]			96.71 mm^2	ARMv7s^[109]		Swift^[110]		1.3 GHz ^[111]					3	6	48	266 or 709 MHz	25.5 or 68.0 GFLOPS	64-bit	2 channels 32-bit/channel	LPDDR2-1066 (533 MHz)	8.5 GB/s		September 21, 2012
A6X	APL5598	S5L8955					123 mm^2					1.4 GHz				PowerVR SGX554 ^[112]	4	16	128	300 MHz	76.8 GFLOPS	128-bit	4 channels 32-bit/channel		17.0 GB/s		November 2, 2012
A7	APL0698	S5L8960		28 nm Hκ MG ^[113]		1 billion	102 mm^2	ARMv8.0-A	64-bit	Cyclone		1.3 GHz	L1i: 64 KB L1d: 64 KB			4 MB (Inclusive)				PowerVR G6430	450 MHz	115.2 GFLOPS	64-bit	1 channel 64-bit/channel	LPDDR3-1600 (800 MHz)		12.8 GB/s	September 20, 2013
	APL5698	S5L8965										1.4 GHz																November 1, 2013
A8	APL1011	T7000		20 nm Hκ MG	TSMC	2 billion	89 mm^2 ^[114] ^[115]			Typhoon		1.1 GHz								PowerVR GX6450 ^[116] ^[117]	533 MHz	136.4 GFLOPS						September 19, 2014
												1.4 GHz
												1.5 GHz														2 GB
A8X	APL1021	T7001				3 billion	128 mm^2				3			3-core	2 MB		PowerVR GX6850	8	32	256	450 MHz	230.4 GFLOPS	128-bit	2 channels 64-bit/channel			25.6 GB/s	October 22, 2014
A9	APL0898	S8000		14 nm FinFET ^[118]	Samsung	≥ 2 billion	96 mm^2 ^[119]			Twister	2	1.85 GHz ^[120] ^[121]		Dual-core	3 MB	4 MB (Victim)^[122] ^[123]	PowerVR GT7600 ^[124]	6	24	192	650 MHz	249.6 GFLOPS	64-bit	1 channel 64-bit/channel	LPDDR4-3200 (1600 MHz)			September 25, 2015
	APL1022	S8003		16 nm FinFET ^[125]	TSMC		104.5 mm^2
A9X	APL1021	S8001				≥ 3 billion	143.9 mm^2 ^[126]					2.16 GHz ^[127] ^[128]				PowerVR GT7850	12	48	384	499.2 GFLOPS		128-bit	2 channels 64-bit/channel	November 11, 2015
												2.26 GHz				128-bit						2 channels 64-bit/channel	51.2 GB/s			4 GB
A10 Fusion	APL1W24	T8010				3.3 billion	125 mm^2	ARMv8.1-A		Hurricane	2	1.64 GHz	Zephyr	2	1.09 GHz	Quad-core	P-core: L1i: 64 KB L1d: 64 KB E-core: L1i: 32 KB L1d: 32 KB	P-core: 3 MB E-core: 1 MB	4 MB	PowerVR GT7600 Plus^[129] ^[130] ^[131]	6	24	192	900 MHz		345.6 GFLOPS	64-bit	1 channel 64-bit/channel	25.6 GB/s	2 GB	September 16, 2016
												2.34 GHz
																														3 GB
A10X Fusion	APL1071	T8011		10 nm FinFET		≥ 4 billion	96.4 mm^2				3	2.38 GHz		3	1.30 GHz	6-core		P-core: 8 MB E-core: 1 MB	4 M4		12	48	384	1000 MHz		768.0 GFLOPS	128-bit	2 channels 64-bit/channel	51.2 GB/s	3 GB	June 13, 2017
																			4 GB
A11 Bionic	APL1W72	T8015				4.3 billion	87.66 mm^2 ^[132]	ARMv8.2-A ^[133]		Monsoon	2	2.39 GHz	Mistral	4	1.19 GHz	6-core			1st generation Apple- designed	3	12	192	1066 MHz	409.3 GFLOPS	2	600 billion OPS	64-bit	4 channels 16-bit/channel	LPDDR4X-4266 (2133 MHz)	34.1 GB/s	2 GB	September 22, 2017
																															3 GB
A12 Bionic	APL1W81	T8020		7 nm (N7) FinFET		6.9 billion	83.27 mm^2 ^[134]	ARMv8.3-A ^[135]		Vortex		2.49 GHz	Tempest	4	1.59 GHz		P-core: L1i: 128 KB L1d: 128 KB E-core: L1i: 32 KB L1d: 32 KB	P-core: 8 MB E-core: 2 MB	8 MB	2nd generation Apple- designed (Apple G11P)	4	16	256	1125 MHz	576.0 GFLOPS	8						5 TOPS	September 21, 2018
																															4 GB
A12X Bionic	APL1083	T8027				10 billion	135 mm^2 ^[136]				4					8-core				Second generation Apple- designed (Apple G11G)	7	28	448		1.008 TFLOPS		128-bit	2 channels 64-bit/channel		68.2 GB/s			November 7, 2018
																															6 GB
A12Z Bionic																					8	32	512		1.152 TFLOPS								March 25, 2020
																															16 GB		June 22, 2020
A13 Bionic	APL1W85	T8030		7 nm (N7P) FinFET		8.5 billion	98.48 mm^2 ^[137]	ARMv8.4-A ^[138]		Lightning	2	2.66 GHz	Thunder		1.72 GHz	6-core	P-core: L1i: 192 KB L1d: 128 KB E-core: L1i: 96 KB L1d: 48 KB	P-core: 8 MB E-core: 4 MB	16 MB	3rd generation Apple- designed ^[139]	4	16 ^[140]	256	1350 MHz	691.2 GFLOPS		5.5 TOPS	64-bit		4 channels 16-bit/channel	34.1 GB/s	3 GB	September 20, 2019
																																4 GB
A14 Bionic	APL1W01	T8101		5 nm (N5) FinFET		11.8 billion	88 mm^2 ^[141]	ARMv8.5-A ^[142]		Firestorm		3.00 GHz	Icestorm		1.82 GHz		P-core: L1i: 192 KB L1d: 128 KB E-core: L1i: 128 KB L1d: 64 KB			4th generation Apple- designed ^[143] ^[144] ^[145]				1462.5 MHz	748.8 GFLOPS	16	11 TOPS						October 23, 2020
																																4 GB
A15 Bionic	APL1W07 ^[146]	T8110		5 nm (N5P) FinFET		15 billion	108.01 mm^2	ARMv8.6-A		Avalanche		3.24 GHz	Blizzard		2.02 GHz			P-core: 12 MB E-core: 4 MB	32 MB	5th generation Apple- designed ^[147] ^[148] ^[149]			512	1338 MHz ^[150]	1.370 TFLOPS		15.8 TOPS					4 GB	September 24, 2021
												2.93 GHz									5	20 ^[151]	640		1.713 TFLOPS
												3.24 GHz																				6 GB
A16 Bionic	APL1W10	T8120		4 nm (N4P) FinFET ^[152]		16 billion	112.75 mm^2			Everest ^[153] ^[154]		3.46 GHz	Sawtooth					P-core: 16 MB E-core: 4 MB^[155]	24 MB	6th generation Apple- designed				1398 MHz	1.789 TFLOPS		17 TOPS		LPDDR5-6400 (3200 MHz)		51.2 GB/s		September 16, 2022
A17 Pro	APL1V02	T8130		3 nm (N3B) FinFET		19 billion	103.80 mm^2					3.78 GHz ^[156]			2.11 GHz					7th generation Apple- designed	6	24	768		2.147 TFLOPS		35 TOPS					8 GB	September 22, 2023

H series

The Apple "H" series is a family of SoCs with low-power audio processing and wireless connectivity for use in headphones.

Apple H1

The Apple H1 chip was used in the second and third generation AirPods and the first generation AirPods Pro. It was also used in the Powerbeats Pro, the Beats Solo Pro, Beats Fit Pro, the 2020 Powerbeats, and AirPods Max.^[157] Specifically designed for headphones, it has Bluetooth 5.0, supports hands-free "Hey Siri" commands,^[158] and offers 30 percent lower latency than the W1 chip used in earlier AirPods.^[159]

Apple H2

The Apple H2 chip was first used in the 2022 version of AirPods Pro. It has Bluetooth 5.3, and implements 48 kHz noise reduction in hardware. The 2022 version of the H2 operates only on the 2.4 GHz frequency, while the 2023 version adds support for audio transmission using a proprietary protocol in two specific frequency ranges of the 5 GHz band.^[160]

Comparison of H series processors

Name	Model no.	Image	Bluetooth	First release
H1	343S00289^[161] (AirPods 2nd Generation) 343S00290^[162] (AirPods 3nd Generation) 343S00404^[163] (AirPods Max) H1 SiP^[164] (AirPods Pro)		5.0	March 20, 2019
H2	AirPods Pro (2nd generation)^[165] Apple Vision Pro		5.3	September 7, 2022

M series

The Apple "M" series is a family of systems on a chip (SoC) used in Mac computers from November 2020 or later, iPad Pro tablets from April 2021 or later, iPad Air tablets from March 2022 or later, and Vision Pro. The "M" designation was previously used for Apple motion coprocessors.

Apple M1

See main article: Apple M1. The M1, Apple's first system on a chip designed for use in Macs, is manufactured using TSMC's 5 nm process. Announced on November 10, 2020, it was first used in the MacBook Air, Mac mini and 13-inch MacBook Pro, and later used in the iMac, 5th-generation iPad Pro and 5th-generation iPad Air. It comes with 4 performance cores and 4 efficiency cores, for a total of 8 CPU cores. It comes with up to 8 GPU cores, with the entry level MacBook Air having only 7 GPU cores. The M1 has 16 billion transistors.^[166]

Apple M1 Pro

The M1 Pro is a more powerful version of the M1, with six to eight performance cores, two efficiency cores, 14 to 16 GPU cores, 16 Neural Engine cores, up to 32 GB unified RAM with up to 200 GB/s memory bandwidth, and more than double the transistors. It was announced on October 18, 2021, and is used in the 14- and 16-inch MacBook Pro. Apple claimed the CPU performance is about 70% faster than the M1, and that its GPU performance is about double. Apple claims the M1 Pro can deliver up to 20 streams of 4K or 7 streams of 8K ProRes video playback (up from 6 offered by Afterburner card for 2019 Mac Pro).

Apple M1 Max

The M1 Max is a larger version of the M1 Pro chip, with eight performance cores, two efficiency cores, 24 to 32 GPU cores, 16 Neural Engine cores, up to 64 GB unified RAM with up to 400 GB/s memory bandwidth, and more than double the number of transistors. It was announced on October 18, 2021, and is used in the 14- and 16-inch MacBook Pro, as well as the Mac Studio. Apple claims the M1 Max can deliver up to 30 streams of 4K (up from 23 offered by Afterburner card for 2019 Mac Pro) or 7 streams of 8K ProRes video playback.

Apple M1 Ultra

The M1 Ultra consists of two M1 Max dies connected together by a silicon interposer through Apple's UltraFusion interconnect.^[167] It has 114 billion transistors, 16 performance cores, 4 efficiency cores, 48 to 64 GPU cores and 32 Neural Engine cores; it can be configured with up to 128 GB unified RAM of 800 GB/s memory bandwidth. It was announced on March 8, 2022, as an optional upgrade for the Mac Studio. Apple claims the M1 Ultra can deliver up to 18 streams of 8K ProRes video playback.^[168]

Apple M2

See main article: Apple M2. Apple announced the M2 SoC on June 6, 2022 at WWDC, along with a redesigned MacBook Air and a revised 13-inch MacBook Pro and later the sixth-generation iPad Pro and the sixth-generation iPad Air. The M2 is made with TSMC's "enhanced 5-nanometer technology" N5P process and contains 20 billion transistors, a 25% increase from the previous generation M1. The M2 can be configured with up to 24 gigabytes of RAM and 2 terabytes of storage. It has 8 CPU cores (4 performance and 4 efficiency) and up to 10 GPU cores. The M2 also increases the memory bandwidth to . Apple claims CPU improvements up to 18% and GPU improvements up to 35% compared to the previous M1.^[169]

Apple M2 Pro

The M2 Pro is a more powerful version of the M2, with six to eight performance cores, four efficiency cores, 16 to 19 GPU cores, 16 Neural Engine cores, up to 32 GB unified RAM with up to 200 GB/s memory bandwidth, and double the transistors. It was announced on January 17, 2023 in a press release and it is used in the 14- and 16-inch 2023 MacBook Pro as well as the Mac Mini. Apple claims the CPU performance is 20 percent faster than the M1 Pro and the GPU is 30 percent faster than the M1 Pro.^[170]

Apple M2 Max

The M2 Max is a larger version of the M2 Pro, with eight performance cores, four efficiency cores, 30 to 38 GPU cores, 16 Neural Engine cores, up to 96 GB unified RAM with up to 400 GB/s memory bandwidth, and more than double the transistors. It was announced on January 17, 2023 in a press release and it is used in the 14- and 16-inch 2023 MacBook Pro, as well as the Mac Studio.^[171] Apple claims the CPU performance is 20 percent faster than M1 Max and the GPU is 30 percent faster than the M1 Max.

Apple M2 Ultra

The M2 Ultra consists of two M2 Max dies connected together by a silicon interposer through Apple's UltraFusion interconnect. It has 134 billion transistors, 16 performance cores, 8 efficiency cores, 60 to 76 GPU cores and 32 Neural Engine cores; it can be configured with up to 192 GB unified RAM of 800 GB/s memory bandwidth. It was announced on June 5, 2023, as an optional upgrade for the Mac Studio and the sole processor for the Mac Pro. Apple claims the M2 Ultra can deliver up to 22 streams of 8K ProRes video playback.^[172]

Apple M3

See main article: Apple M3. Apple announced the M3 series of chips on October 30, 2023, along with the new MacBook Pro and iMac, and later used in the MacBook Air. The M3 is based on the 3 nm process and contains 25 billion transistors, a 25% increase from the previous generation M2. It has 8 CPU cores (4 performance and 4 efficiency) and up to 10 GPU cores. Apple claims CPU improvements up to 35% and GPU improvements up to 65% compared to the M1.^[173]

Apple M3 Pro

The M3 Pro is a more powerful version of the M3, with six performance cores, six efficiency cores, 14 to 18 GPU cores, 16 Neural Engine cores, up to 36 GB unified RAM with 150 GB/s memory bandwidth, and 48% more transistors. It is used in the 14- and 16-inch MacBook Pro. Apple claims the CPU performance is 30 percent faster than the M1 Pro and the GPU is 40 percent faster than the M1 Pro.

Apple M3 Max

The M3 Max is a larger version of the M3 Pro, with ten or twelve performance cores, four efficiency cores, 30 to 40 GPU cores, 16 Neural Engine cores, up to 128 GB unified RAM with up to 400 GB/s memory bandwidth, and more than double the transistors. It is used in the 14- and 16-inch MacBook Pro. Apple claims the CPU performance is 80 percent faster than the M1 Max and the GPU is 50 percent faster than the M1 Max.

Apple M4

See main article: Apple M4. Apple announced the M4 chip on May 7, 2024, along with the new seventh-generation iPad Pro models. The M4 is based on the N3E process rather than the N3B process used by the M3, and contains 28 billion transistors. It has three or four performance cores, six efficiency cores and ten GPU cores. Apple claims the M4 has up to 1.5x faster CPU performance compared to the M2.^[174]

Comparison of M series processors

General! colspan="4"

Semiconductor technology	CPU											GPU							AI accelerator		Media Engine					Memory technology					First release
Name	Codename and part no.	Image	Process	Transistor count	Die size	Transistor density	CPU ISA	Performance core			Efficiency core			Overall cores	Cache	Vendor	Cores	SIMD EU count	FP32 ALU count	Frequency	FP32 FLOPS (TFLOPS)	Hardware-accelerated ray tracing	Cores	OPS	Hardware Acceleration	Media Decode/Encode Engine				Memory bus width		Total channel Bit per channel	Memory type	Theoretical bandwidth	Available capacity
								Core name	Cores	Core speed	Core name	Cores	Core speed		L1											L2	SLC	Video decode	Video encode							ProRes decode & encode	AV1 decode
M1	APL1102 T8103		TSMC N5	16 billion	118.91 mm²^[175]	~134 MTr/mm²	ARMv8.5-A	Firestorm	4	3.20 GHz	Icestorm	4	2.06 GHz	8-core	P-core: L1i: 192 KB L1d: 128 KB E-core: L1i: 128 KB L1d: 64 KB	P-core: 12 MB E-core: 4 MB	8 MB	4th generation Apple-designed	7	28	896	1278 MHz	2.290	16	11 TOPS	H264, HEVC	1	1	128-bit	2 channels 64-bit/channel	LPDDR4X-4266 (2133 MHz)	68.25 GB/s	8 GB 16 GB	November 17, 2020
8																			32	1024	2.617
M1 Pro	APL1103 T6000			33.7 billion	≈ 245 mm² ^[176]	~137 MTr/mm²			6	3.23 GHz		2				P-core: 24 MB E-core: 4 MB	24 MB		14	56	1792	1296 MHz	4.644	H264, HEVC, ProRes, ProRes RAW		1			256-bit	2 channels 128-bit/channel	LPDDR5-6400 (3200 MHz)	204.8 GB/s	16 GB 32 GB	October 26, 2021
8									10-core
														16					64	2048	5.308
	M1 Max	APL1105 T6001 ^[177]			57 billion	≈ 432 mm²								~132 MTr/mm²			48 MB		24	96	3072		7.962			2		2	512-bit	4 channels 128-bit/channel		409.6 GB/s	32 GB 64 GB
	32																		128	4096	10.616
M1 Ultra	APL1W06 T6002			114 billion	≈ 864 mm²	16			4			20-core				P-core: 48 MB E-core: 8 MB	96 MB		48	192	6144		15.925		32	22 TOPS	2	4	4	1024-bit		8 channels 128-bit/channel	819.2 GB/s	64 GB 128 GB	March 18, 2022
64																			256	8192	21.233
M2	APL1109 T8112		TSMC N5P	20 billion	155.25 mm²	~129 MTr/mm²	ARMv8.6-A	Avalanche	4	3.50 GHz	Blizzard	4	2.42 GHz	8-core		P-core: 16 MB E-core: 4 MB	8 MB	5th generation Apple-designed	8	32	1024	1398 MHz	2.863		16	15.8 TOPS	1	1	1	128-bit		2 channels 64-bit/channel	102.4 GB/s	8 GB 16 GB 24 GB	June 24, 2022
																			9 ^[178]	36	1152		3.578	H264, HEVC
																			10	40	1280			H264, HEVC, ProRes, ProRes RAW					1
M2 Pro	APL1113 T6020			40 billion	~289 mm²^[179]	~138 MTr/mm²			6					10-core		P-core: 32 MB E-core: 4 MB	24 MB		16	64	2048		5.726							256-bit		4 channels 64-bit/channel	204.8 GB/s	16 GB 32 GB	January 24, 2023
8									12-core					19					76	2432	6.799
	M2 Max	APL1111 T6021			67 billion									3.69 GHz ^[180]			48 MB		30	120	3840		10.736					2	2	512-bit		4 channels 128-bit/channel	409.6 GB/s	32 GB 64 GB 96 GB
	38																		152	4864	13.599
M2 Ultra	APL1W12 T6022			134 billion					16	~3.00 GHz -3.70 GHz ^[181] ^[182]		8		24-core		P-core: 64 MB E-core: 8 MB	96 MB		60	240	7680		21.473		32	31.6 TOPS	2	4	4	1024-bit		8 channels 128-bit/channel	819.2 GB/s	64 GB 128 GB 192 GB	June 13, 2023
76																			304	9728	27.199
M3	APL1201 T8122		TSMC N3B	25 billion				4	4.05 GHz	4	2.75 GHz	8-core	P-core: 16 MB E-core: 4 MB	8 MB		7th generation Apple-designed	8	128	1024	1380 MHz^[183]	2.826	16	18 TOPS		1	1	1	1	128-bit	2 channels 64-bit/channel		102.4 GB/s	8 GB 16 GB 24 GB	November 7, 2023
10								160		1280							3.533
M3 Pro	APL1203 T6030			37 billion				5		6		11-core		12 MB			14	224	1792		4.946	192-bit							3 channels 64-bit/channel	153.6 GB/s		18 GB 36 GB
6								12-core				18					288	2304	6.359
M3 Max	APL1204 T6034			92 billion				10		4		14-core	P-core: 32 MB E-core: 4 MB	48 MB			30	480	3840		10.598	2				2	384-bit		3 channels 128-bit/channel	307.2 GB/s		36 GB 96 GB
APL1204 T6031	12							16-core				40					640	5120	14.131		512-bit						4 channels 128-bit/channel		409.6 GB/s	48 GB 64 GB 128 GB
M4	APL1206 T8132		TSMC N3E	28 billion			ARMv9^[184]	3	4.40 GHz	6	2.85 GHz	9-core	P-core: 16 MB E-core: 4 MB				10	160	1280	1470 MHz^[185]	3.763	38 TOPS	1			1	128-bit		2 channels 64-bit/channel	LPDDR5X-7500 (3750 MHz)	120 GB/s	8 GB	May 15, 2024
4								10-core				16 GB

R series

The R series is a family of low-latency system on a chips (SoCs) for real-time processing of sensor inputs.

Apple R1

The Apple R1 was announced by Apple on June 5, 2023 at its Worldwide Developers Conference. It is used in the Apple Vision Pro headset. The Apple R1 is dedicated to the real time processing of sensor inputs and delivering extremely low-latency images to the displays.

S series

The Apple "S" series is a family of systems in a package (SiP) used in the Apple Watch and HomePod. It uses a customized application processor that together with memory, storage and support processors for wireless connectivity, sensors, and I/O form a complete computer in a single package. They are designed by Apple and manufactured by contract manufacturers such as Samsung.

Apple S1

See main article: Apple S1.

The Apple S1 is an integrated computer. It includes memory, storage and support circuits like wireless modems and I/O controllers in a sealed integrated package. It was announced on September 9, 2014, as part of the "Wish we could say more" event. It was used in the first-generation Apple Watch.^[186]

Apple S1P

Used in Apple Watch Series 1. It has a dual-core processor identical to the S2, with the exception of the built-in GPS receiver. It contains the same dual-core CPU with the same new GPU capabilities as the S2, making it about 50% faster than the S1.^[187]

Apple S2

See main article: Apple S2. Used in the Apple Watch Series 2. It has a dual-core processor and a built-in GPS receiver. The S2's two cores deliver 50% higher performance and the GPU delivers twice as much as the predecessor, and is similar in performance to the Apple S1P.^[188]

Apple S3

Used in the Apple Watch Series 3. It has a dual-core processor that is 70% faster than the Apple S2 and a built-in GPS receiver.^[189] There is also an option for a cellular modem and an internal eSIM module. It also includes the W2 chip. The S3 also contains a barometric altimeter, the W2 wireless connectivity processor, and in some models UMTS (3G) and LTE (4G) cellular modems served by a built-in eSIM.

Apple S4

Used in the Apple Watch Series 4. It introduced 64-bit ARMv8 cores to the Apple Watch through two Tempest cores,^{[190] [191]} which are also found in the A12 as energy-efficient cores. Despite its small size, Tempest uses a 3-wide decode out-of-order superscalar design, which makes it much more powerful than preceding in-order cores.

The S4 contains a Neural Engine that is able to run Core ML.^[192] Third-party apps can use it starting from watchOS 6. The SiP also includes new accelerometer and gyroscope functionality that has twice the dynamic range in measurable values of its predecessor, as well as being able to sample data at 8 times the speed.^[193] It contains the W3 wireless chip, which supports Bluetooth 5. It also contains a new custom GPU, which can use the Metal API.^[194]

Apple S5

Used in the Apple Watch Series 5, Watch SE, and HomePod mini.^[195] It adds a built-in magnetometer to the custom 64-bit dual-core processor and GPU of the S4.^[196]

Apple S6

Used in the Apple Watch Series 6. It has a custom 64-bit dual-core processor that runs up to 20 percent faster than the S5.^{[197] [198]} The dual cores in the S6 are based on the A13's energy-efficient "little" Thunder cores at 1.8 GHz.^[199] Like the S4 and S5, it also contains the W3 wireless chip. The S6 adds the new U1 ultra wideband chip, an always-on altimeter, and 5 GHz WiFi.

Apple S7

Used in the Apple Watch Series 7 and second-generation HomePod. The S7 has the same T8301 identifier and quoted performance as the S6.^[200]

Apple S8

Used in the Apple Watch SE (2nd generation), Watch Series 8, and Watch Ultra. The S8 adds a new three-axis gyroscope and high g-force accelerometer.^[201] It has the same T8301 identifier and quoted performance as the S6 and S7.^[202]

Apple S9

Used in the Apple Watch Series 9 and Watch Ultra 2. The S9 has a new dual-core CPU with 60 percent more transistors than the S8, and a new four-core Neural Engine.^[203]

Comparison of S series processors

Name	Model no.	Image	Semiconductor technology	Die size	CPU ISA	CPU	CPU cache	GPU	Memory technology	Modem	First release
S1	APL 0778 ^[204]		28 nm Hκ MG^[205] ^[206]	32 mm^2	ARMv7k^[207]	520 MHz single-core Cortex-A7	L1d  32 KB^[208] L2: 256 KB	PowerVR Series 5^[209]	LPDDR3^[210]		April 24, 2015
S1P	TBC		TBC	ARMv7k^[211] ^[212] ^[213]	520 MHz dual-core Cortex-A7	L1d  32 KB	PowerVR Series 6 'Rogue'	LPDDR3		September 12, 2016
S2
S3			ARMv7k^[214]	Dual-core	TBC		LPDDR4	Qualcomm MDM9635M Snapdragon X7 LTE	September 22, 2017
S4			7 nm (TSMC N7)	TBC	ARMv8.3-A ILP32^[215] ^[216]	1.59 GHz Dual-core Tempest	L1d  32 KB L2: 2 MB	Apple G11M	TBC	September 21, 2018
S5									September 20, 2019
S6			7 nm (TSMC N7P)	TBC	1.8 GHz Dual-core Thunder	L1d  48 KB^[217] L2: 4 MB^[218]	TBC			September 18, 2020
S7				October 15, 2021
S8				September 16, 2022
S9			4 nm (TSMC N4P)^[219]	Dual-core Sawtooth	L1d  64 KB L2: 4 MB^[220]	September 22, 2023

T series

The T series chip operates as a secure enclave on Intel-based MacBook and iMac computers released from 2016 onwards. The chip processes and encrypts biometric information (Touch ID) and acts as a gatekeeper to the microphone and FaceTime HD camera, protecting them from hacking. The chip runs bridgeOS, a purported variant of watchOS.^[221] The functions of the T series processor were built into the M series CPUs, thus ending the need for the T series.

Apple T1

The Apple T1 chip is an ARMv7 SoC (derived from the processor in the Apple Watch's S2) that drives the System Management Controller (SMC) and Touch ID sensor of the 2016 and 2017 MacBook Pro with Touch Bar.^[222]

Apple T2

See main article: Apple T2. The Apple T2 security chip is a SoC first released in the iMac Pro. It is a 64-bit ARMv8 chip (a variant of the A10 Fusion, or T8010).^[223] It provides a secure enclave for encrypted keys, enables users to lock down the computer's boot process, handles system functions like the camera and audio control, and handles on-the-fly encryption and decryption for the solid-state drive.^{[224] [225] [226]} T2 also delivers "enhanced imaging processing" for the iMac Pro's FaceTime HD camera.^{[227] [228]}

Comparison of T series processors

Name	Model no.	Image	Semiconductor technology	Die size	CPU ISA	CPU	CPU cache	GPU	Memory technology	First release
									Memory bandwidth
T1	APL 1023 ^[229]		TBC	TBC	ARMv7			TBD		November 12, 2016
T2	APL 1027 ^[230]		TSMC 16 nm FinFET.^[231]	104 mm^2	ARMv8-A ARMv7-A	2× Hurricane 2× Zephyr + Cortex-A7	L1i: 64 KB L1d: 64 KB L2: 3 MB	3× cores	LP-DDR4	December 14, 2017

U series

The Apple "U" series is a family of systems in a package (SiP) implementing ultra-wideband (UWB) radio.

Apple U1

The Apple U1 is used in the iPhone 11 series through the iPhone 14 series (excluding the second and third generation iPhone SE); Apple Watch Series 6 through the Apple Watch Series 8 and Apple Watch Ultra (1st generation); HomePod (2nd generation) and HomePod Mini; AirTag trackers; and the charging case for AirPods Pro (2nd generation).^[232]

Apple U2

The Apple U2 (referred to by Apple as its "Second-generation Ultra Wideband chip") is used in the iPhone 15 series, Apple Watch Series 9, and Apple Watch Ultra 2.

Comparison of U series processors

Name	Model no.	Image	CPU	Semiconductor technology	First release
U1	TMKA75 ^[233]		Cortex-M4 ARMv7E-M^[234]	16 nm FinFET (TSMC 16FF)	September 20, 2019
U2					September 22, 2023

W series

The Apple "W" series is a family of RF SoCs used for Bluetooth and Wi-Fi connectivity.

Apple W1

The Apple W1 is a SoC used in the 2016 AirPods and select Beats headphones.^{[235] [236]} It maintains a Bluetooth^[237] Class 1 connection with a computer device and decodes the audio stream that is sent to it.^[238]

Apple W2

The Apple W2, used in the Apple Watch Series 3, is integrated into the Apple S3 SiP. Apple claimed the chip makes Wi-Fi 85% faster and allows Bluetooth and Wi-Fi to use half the power of the W1 implementation.

Apple W3

The Apple W3 is used in the Apple Watch Series 4,^[239] Series 5,^[240] Series 6, SE (1st generation), Series 7, Series 8, SE (2nd generation), Ultra, Series 9 and Ultra 2. It is integrated into the Apple S4, S5, S6, S7, S8 and S9 SiPs. It supports Bluetooth 5.0/5.3.

Comparison of W series processors

Name	Model no.	Image	Semiconductor technology	Die size	CPU ISA	CPU	CPU cache	Memory technology	Bluetooth	First release
								Memory bandwidth
W1	343S00130^[241] 343S00131		TBC	14.3  mm^2	TBC				4.2	December 13, 2016
W2	338S00348^[242]		TBC	September 22, 2017
W3	338S00464^[243]		5.0/5.3	September 21, 2018

M series coprocessors

See main article: Apple motion coprocessors. The Apple M-series coprocessors are motion coprocessors used by Apple Inc. in their mobile devices. First released in 2013, their function is to collect sensor data from integrated accelerometers, gyroscopes and compasses and offload the collecting and processing of sensor data from the main central processing unit (CPU).

Only the M7 and M8 coprocessors were housed on separate chips; the M9, M10, and M11 coprocessors were embedded in their corresponding A-series chips. Beginning with the A12 Bionic chip in 2018, the motion coprocessors were fully integrated into the SoC; this allowed Apple to reuse the "M"-series codename for their desktop SoCs.

Comparison of M series coprocessors

Name	Model no.	Image	Semiconductor technology	CPU ISA	CPU	First release
Apple M7	LPC18A1		90 nm	ARMv7-M	150 MHz Cortex-M3	September 10, 2013
Apple M8	LPC18B1					September 9, 2014

Miscellaneous devices

This segment is about Apple-designed processors that are not easily sorted into another section.

Early series

See also: Early iPhone systems-on-chip. Apple first used Samsung-developed SoCs in early versions of the iPhone and iPod Touch. They combine in one package a single ARM-based processing core (CPU), a graphics processing unit (GPU), and other electronics necessary for mobile computing.

The APL0098 (also 8900B^[244] or S5L8900) is a package on package (PoP) system on a chip (SoC) that was introduced on June 29, 2007, at the launch of the original iPhone. It includes a 412 MHz single-core ARM11 CPU and a PowerVR MBX Lite GPU. It was manufactured by Samsung on a 90 nm process. The iPhone 3G and the first-generation iPod Touch also use it.^[245]

The APL0278^[246] (also S5L8720) is a PoP SoC introduced on September 9, 2008, at the launch of the second-generation iPod Touch. It includes a 533 MHz single-core ARM11 CPU and a PowerVR MBX Lite GPU. It was manufactured by Samsung on a 65 nm process.

The APL0298 (also S5L8920) is a PoP SoC introduced on June 8, 2009, at the launch of the iPhone 3GS. It includes a 600 MHz single-core Cortex-A8 CPU and a PowerVR SGX535 GPU. It was manufactured by Samsung on a 65 nm process.

The APL2298 (also S5L8922) is a 45 nm die shrunk version of the iPhone 3GS SoC and was introduced on September 9, 2009, at the launch of the third-generation iPod Touch.

Other

The Samsung S5L8747 is an ARM-based microcontroller used in Apple's Lightning Digital AV Adapter, a Lightning-to-HDMI adapter. This is a miniature computer with 256 MB RAM, running an XNU kernel loaded from the connected iPhone, iPod Touch, or iPad, then taking a serial signal from the iOS device translating that into a proper HDMI signal.^{[247] [248]}

See also

• ARM Cortex-A9
• List of iPhone models
• List of iPad models
• List of Mac models grouped by CPU type
• List of Samsung platforms (SoCs):
  • Exynos (none have been used by Apple)
  • historical (some were used in Apple products)
• PowerVR SGX GPUs were also used in the iPhone 3GS and the third-generation iPod Touch
• PWRficient, a processor designed by P.A. Semi, a company Apple acquired to form an in-house custom chip design department

Similar platforms

• A31 by AllWinner
• Atom by Intel
• BCM2xxxx by Broadcom
• eMAG and Altra by Ampere Computing
• Exynos by Samsung
• i.MX by Freescale Semiconductor
• Jaguar and Puma by AMD
• Kirin by HiSilicon
• MTxxxx by MediaTek
• NovaThor by ST-Ericsson
• OMAP by Texas Instruments
• RK3xxx by Rockchip
• Snapdragon by Qualcomm
• Tegra by Nvidia

Further reading

• Web site: Gurman . Mark . January 29, 2018 . How Apple Built a Chip Powerhouse to Threaten Qualcomm and Intel . subscription . Bloomberg Businessweek.

Notes and References

1. Apple announces Mac transition to Apple silicon . June 22, 2020 . Apple . June 23, 2020 . live . https://web.archive.org/web/20200622185215/https://www.apple.com/newsroom/2020/06/apple-announces-mac-transition-to-apple-silicon/ . June 22, 2020 . .
2. Web site: Warren . Tom . June 22, 2020 . Apple is switching Macs to its own processors starting later this year . live . https://web.archive.org/web/20200622192505/https://www.theverge.com/2020/6/22/21295475/apple-mac-processors-arm-silicon-chips-wwdc-2020 . June 22, 2020 . June 22, 2020 . The Verge.
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21. Web site: September 8, 2010 . Teardown of Apple's 4th-gen iPod Touch finds 256 MB of RAM . live . https://web.archive.org/web/20100911215136/http://www.appleinsider.com/articles/10/09/08/teardown_of_apples_4th_gen_ipod_touch_finds_256mb_of_ram.html . September 11, 2010 . September 10, 2010 . Appleinsider.com.
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179. Web site: October 31, 2023 . A Brief Look at Apple’s M2 Pro iGPU . Chips and Cheese .
180. Web site: Apple M2 Max. notebookcheck.net/. January 18, 2023. November 1, 2023.
181. Web site: Apple's M2 Ultra could be slower than the Intel Core i9-13900KS. xda-developers.com/. June 12, 2023. November 1, 2023.
182. Web site: Apple Mac Studio "M2 Ultra" 24 CPU/60 GPU Specs. everymac.com/. September 26, 2023. November 1, 2023.
183. Web site: Apple M3 Pro (14 Core) . 2023-11-21 . GPU Monkey.
184. Web site: Sohail . Omar . 2024-05-10 . Apple’s M4 Has Reportedly Adopted The ARMv9 Architecture, Allowing It To Run Complex Workloads More Efficiently, Resulting In Higher Single & Multi-Core Gains . 2024-05-11 . Wccftech . en-US.
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194. Web site: Troughton-Smith . Steve . 2018-10-02 . Ok we may not have an Apple Watch benchmark, but holy shit I can do 60fps physically-based Metal rendering and realtime physics on the Series 4 pic.twitter.com/GXza08pgIP . 2019-09-18 . @stroughtonsmith . en . November 8, 2021 . https://web.archive.org/web/20211108165513/https://twitter.com/stroughtonsmith/status/1047188165369495552 . live .
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196. 1174376928758968320 . stroughtonsmith . According to Xcode, Apple Watch Series 5 has the same generation CPU/GPU as the Apple Watch Series 4; I guess the only changes are a gyro and 32 GB of NAND? The plus side of that is that we won't have to worry about watchOS being slower on the Series 4 than on a brand new model . September 18, 2019 . Troughton-Smith . Steve.
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201. News: Fathi . Sami . September 7, 2022 . Apple Watch Series 8 Announced With New Body Temperature Sensor, Car Crash Detection, and More . MacRumors . September 9, 2022 . September 8, 2022 . https://web.archive.org/web/20220908191316/https://www.macrumors.com/2022/09/07/apple-announces-apple-watch-series-8/ . live .
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203. News: Charlton . Hartley . September 12, 2023 . Apple Watch Series 9 Unveiled With S9 Chip, 'Double Tap' Gesture, and More . MacRumors . September 12, 2023.
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212. Web site: We Just Took Apart the Apple Watch Series 1—Here's What We Found Out . Andrew . Goldheart . October 1, 2016 . iFixit . live . https://web.archive.org/web/20180124142636/https://ifixit.org/blog/8439/apple-watch-series-1/ . January 24, 2018 . January 5, 2018.
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218. Web site: Apple Watch Series7 . 2023-11-17 . X (formerly Twitter) . en.
219. Web site: Apple Watch Series 9’s S9 SiP Is A 4nm Part And Cut-Down Version Of The A16 Bionic, Revealing A Scalable Architecture For Various Product Lines . March 17, 2024 .
220. Web site: watch9 . 2023-11-17 . X (formerly Twitter) . en.
221. News: Cunningham . Andrew . October 28, 2016 . 15 hours with the 13" MacBook Pro, and how Apple's T1 bridges ARM and Intel . . live . December 4, 2018 . https://web.archive.org/web/20170414072236/https://arstechnica.com/apple/2016/10/15-hours-with-the-13-macbook-pro-and-how-apples-t1-bridges-arm-and-intel/ . April 14, 2017.
222. News: Smith . Ryan . October 27, 2016 . Apple Announces 4th Generation MacBook Pro Family: Thinner, Lighter, with Thunderbolt 3 & "Touchbar" . . live . October 27, 2016 . https://web.archive.org/web/20161029043427/http://www.anandtech.com/show/10799/apple-announces-4th-generation-macbook-pro-family-thinner-lighter-with-thunderbolt-3-touch-bar . October 29, 2016.
223. Web site: Parrish . Kevin . July 24, 2018 . Apple's T2 chip may be causing issues in iMac Pro and 2018 MacBook Pros . https://web.archive.org/web/20180918223447/https://www.digitaltrends.com/computing/apple-t2-chip-may-be-causing-imac-pro-macbook-problems/ . September 18, 2018 . January 22, 2019 . . Of all the error messages uploaded to these threads, there is one detail they seem to share: Bridge OS. This is an embedded operating system used by Apple's stand-alone T2 security chip, which provides the iMac Pro with a secure boot, encrypted storage, live “Hey Siri” commands, and so on..
224. Web site: December 14, 2017 . iMac Pro Features Apple's Custom T2 Chip With Secure Boot Capabilities . live . https://web.archive.org/web/20180818214500/https://www.macrumors.com/2017/12/14/imac-pro-has-t2-chip-with-secure-boot/ . August 18, 2018 . August 18, 2018 . MacRumors.
225. Web site: Evans . Jonny . July 23, 2018 . The MacBook Pro's T2 chip boosts enterprise security . live . https://web.archive.org/web/20180818214802/https://www.computerworld.com/article/3290415/apple-mac/the-macbook-pro-s-t2-chip-boosts-enterprise-security.html . August 18, 2018 . August 18, 2018 . Computerworld.
226. Web site: The T2 chip makes the iMac Pro the start of a Mac revolution . live . https://web.archive.org/web/20180818214801/https://www.macworld.com/article/3245764/macs/the-t2-chip-makes-the-imac-pro-the-start-of-a-mac-revolution.html . August 18, 2018 . August 18, 2018 . Macworld.
227. Web site: December 12, 2017 . iMac Pro debuts custom Apple T2 chip to handle secure boot, password encryption, more . live . https://web.archive.org/web/20171213234244/http://appleinsider.com/articles/17/12/12/imac-pro-debuts-custom-apple-t2-chip-to-handle-secure-boot-password-encryption-more . December 13, 2017 . December 14, 2017 . AppleInsider.
228. Web site: August 8, 2018 . Everything you need to know about Apple's T2 chip in the 2018 MacBook Pro . live . https://web.archive.org/web/20180818214509/https://appleinsider.com/articles/18/08/08/everything-you-need-to-know-about-apples-t2-chip-in-the-2018-macbook-pro . August 18, 2018 . August 18, 2018 . AppleInsider.
229. Web site: November 15, 2016 . MacBook Pro 13" Touch Bar Teardown . live . https://web.archive.org/web/20161116133805/https://www.ifixit.com/Teardown/MacBook+Pro+13-Inch+Touch+Bar+Teardown/73480 . November 16, 2016 . November 17, 2016 . iFixit.
230. Web site: January 2, 2018 . iMac Pro Teardown . live . https://web.archive.org/web/20180103110518/https://www.ifixit.com/Teardown/iMac+Pro+Teardown/101807 . January 3, 2018 . January 3, 2018 . iFixit.
231. Web site: Boldt . Paul . July 11, 2021 . Apple's Orphan Silicon . July 18, 2021 . SemiWiki . en . September 22, 2022 . https://web.archive.org/web/20220922180857/https://semiwiki.com/semiconductor-manufacturers/tsmc/301118-apples-orphan-silicon/ . live .
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233. Web site: Apple U1 TMKA75 Ultra Wideband (UWB) Chip Analysis TechInsights . July 30, 2020 . www.techinsights.com . December 28, 2020 . https://web.archive.org/web/20201228174845/https://www.techinsights.com/blog/apple-u1-tmka75-ultra-wideband-uwb-chip-analysis#:~:text=One%20of%20the%20most%20interesting,Ultra%20Wideband%20(UWB)%20chip. . live .
234. Web site: @ghidraninja . Yesss!! After hours of trying (and bricking 2 AirTags) I managed to break into the microcontroller of the AirTag! . Twitter . May 10, 2021 . November 13, 2021 . https://web.archive.org/web/20211113080939/https://twitter.com/ghidraninja/status/1391148503196438529/photo/2 . live .
235. Web site: Tilley . Aaron . Apple Creates Its First Wireless Chip For New Wireless Headphones, AirPods . live . https://web.archive.org/web/20180409110240/https://www.forbes.com/sites/aarontilley/2016/09/07/apple-creates-its-first-wireless-chip-for-new-airpods/#19a1b3db7240 . April 9, 2018 . August 24, 2017 . Forbes.
236. Web site: Apple Announces New Line of Beats Headphones With W1 Wireless Chip . live . https://web.archive.org/web/20160910140233/http://www.macrumors.com/2016/09/07/beats-by-dre-w1-chip/ . September 10, 2016 . September 8, 2016 . MacRumors. September 7, 2016 .
237. Web site: September 7, 2016 . Apple's AirPods do use Bluetooth and they don't require an iPhone 7 . live . https://web.archive.org/web/20160908014257/http://www.recode.net/2016/9/7/12841136/apple-airpods-do-use-bluetooth . September 8, 2016 . September 8, 2016 . Recode.
238. Web site: AirPods . live . https://web.archive.org/web/20170918215039/https://www.apple.com/airpods/ . September 18, 2017 . September 8, 2017 . Apple Inc..
239. Web site: Apple Watch Series 4 . live . https://web.archive.org/web/20180912185743/https://www.apple.com/apple-watch-series-4/ . September 12, 2018 . September 13, 2018 . . en-US.
240. Web site: Apple Watch – Compare Models . live . https://web.archive.org/web/20170712183811/https://www.apple.com/watch/compare/ . July 12, 2017 . September 13, 2018 . . en-US.
241. Web site: techinsights.com . Apple W1 343S00131 Bluetooth Module . live . https://web.archive.org/web/20170218065725/http://w2.techinsights.com/l/4202/2017-01-19/wpgz2 . February 18, 2017 . February 17, 2017 . w2.techinsights.com.
242. Web site: techinsights.com . Apple Watch Series 3 Teardown . live . https://web.archive.org/web/20171014130533/http://techinsights.com/about-techinsights/overview/blog/apple-watch-series-3-teardown/ . October 14, 2017 . October 14, 2017 . techinsights.com.
243. Web site: techinsights.com . Apple W3 338S00464 Wireless Combo SoC Basic Functional Analysis . live . https://web.archive.org/web/20200328185841/https://www.techinsights.com/products/far-1810-808 . March 28, 2020 . March 28, 2020 . techinsights.com.
244. Web site: June 29, 2007 . iPhone 1st Generation Teardown . live . https://web.archive.org/web/20200621190932/https://www.ifixit.com/Teardown/iPhone+1st+Generation+Teardown/599#s3166 . June 21, 2020 . June 19, 2020 . . Step 25.
245. Web site: Snell . Jason . November 25, 2008 . That iPod Touch runs at 533 MHz . October 23, 2021 . . October 22, 2021 . https://web.archive.org/web/20211022225627/https://www.macworld.com/article/193623/ipod_touch_speed.html . live .
246. Web site: September 10, 2008 . iPod Touch 2nd Generation Teardown . live . https://web.archive.org/web/20200621123456/https://www.ifixit.com/Teardown/iPod+Touch+2nd+Generation+Teardown/586#s2925 . June 21, 2020 . June 19, 2020 . . Step 15.
247. Web site: March 1, 2013 . The Lightning Digital AV adapter surprise . January 16, 2021 . . en-US . January 22, 2021 . https://web.archive.org/web/20210122180502/https://panic.com/blog/the-lightning-digital-av-adapter-surprise/ . live .
248. Web site: March 2, 2013 . User comment: Airplay is not involved in the operation of this adapter. . January 16, 2021 . Panic Inc. . en-US . January 22, 2021 . https://web.archive.org/web/20210122180502/https://panic.com/blog/the-lightning-digital-av-adapter-surprise/#comment-16841 . live .