ARM Cortex-A720 explained

ARM Cortex-A720
Produced-Start:	2023
Designfirm:	ARM Ltd.
L1cache:	per core
L2cache:	per core
Arch:	ARMv9.2-A
Microarch:	ARM Cortex-A720
Pcode1:	"Hunter"
Variant:	ARM Cortex-X4
Predecessor:	ARM Cortex-A715
Successor:	ARM Cortex-A725

The ARM Cortex-A720 is a CPU core model from Arm unveiled in TCS23 (total compute solution),^[1] it serves as a successor of the CPU core ARM Cortex-A715, Cortex-A700 CPU cores series generally focus on high performance and efficiency, the CPU core can be paired with other cores in its family like ARM Cortex-X4 or/and ARM Cortex-A520 in a CPU cluster. It can be used as either "big" or "LITTLE".^{[2] [3] [4] [5] [6] [7]}

• 15% peak performance improvement over the Cortex-A715
• Can down to same size as Cortex-A78 with 10% performance improvement
• Down L2 cache hit latency to 9 cycles (from 10 cycles)
• Down mispredict latency to 11 cycles (from 12 cycles)
• x2 L2 bandwidth
• Area optimize configuration for no area cost vs A78
• DSU-120
  • Up to 14 cores (up from 12 cores)
  • Up to 32 MiB of shared L3 cache (increased from 16 MiB)
• Update to ARMv9.2

Architecture comparison

uArch	Cortex-A78	Cortex-A710	Cortex-A715	Cortex-A720
Peak clock speed	~3.0 GHz
Decode width	4		5
Dispatch	6/cycle	5/cycle^[8]		?
Max In-flight	160	?	192+^[9]	?
L0 (Mops entries)	1536^[10] ^[11] ^[12]		0
L1-I + L1-D	32/64+32/64 KiB
L2	128–512 KiB
L3	0–8 MiB	0–16 MiB		0–32 MiB
AArch	32-bit and 64-bit		64-bit
Architecture	ARMv8.2-A	ARMv9.0-A		ARMv9.2-A

See also

• ARM Cortex-X4, related high performance microarchitecture
• ARM Cortex-A520, related high efficient microarchitecture
• Comparison of ARMv8-A cores

Notes and References

1. Web site: Dahad . Nitin . 2023-06-02 . Arm Total Compute Solution 2023 targets premium smartphones . 2024-01-17 . Embedded.com . en-US.
2. Web site: 2023-05-29 . New Arm Cortex-A720 and Cortex-A520 CPUs launched - Announcements - Arm Community blogs - Arm Community . 2023-09-16 . community.arm.com . en.
3. Web site: Cortex-A720 . 2023-09-16 . developer.arm.com.
4. Web site: Bonshor . Gavin . Arm Unveils 2023 Mobile CPU Core Designs: Cortex-X4, A720, and A520 - the Armv9.2 Family . 2023-06-06 . www.anandtech.com.
5. Web site: 2017-05-31 . A closer look at ARM’s new Cortex-A75 and Cortex-A55 CPUs . 2023-06-06 . Android Authority . en.
6. Web site: 2023-05-28 . Arm Introduces A New Big Core, The Cortex-A720 . 2023-06-06 . WikiChip Fuse . en-US.
7. Web site: 2023-05-29 . TCS23: The complete platform for consumer computing - Announcements - Arm Community blogs - Arm Community . 2023-09-16 . community.arm.com . en.
8. Web site: 2021-05-25 . Arm Cortex-X2, A710, and A510 deep dive: New Armv9 CPU designs explained . 2023-06-06 . Android Authority . en.
9. Web site: 2022-06-28 . Arm Introduces The Cortex-A715 . 2023-09-16 . WikiChip Fuse . en-US.
10. Web site: Frumusanu . Andrei . Arm's New Cortex-A78 and Cortex-X1 Microarchitectures: An Efficiency and Performance Divergence . 2023-06-06 . www.anandtech.com.
11. Web site: Documentation – Arm Developer . 2023-06-06 . developer.arm.com.
12. Web site: Documentation – Arm Developer . 2023-06-06 . developer.arm.com.