LGA 4677 explained

LGA 4677
Designed-By:	Intel
Manufacturer:	Lotes
Type:	LGA-ZIF
Formfactors:	Flip-chip
Contacts:	4677
Protocol:	PCI Express Direct Media Interface Ultra Path Interconnect
Fsb:	16 GT/s to 20 GT/s UPI
Dimensions:	77.5 mm x 56.5 mm
Memory:	DDR5 with ECC support
Predecessor:	LGA 4189
Successor:	LGA 4710 LGA 7529

LGA 4677 (Socket E) is a zero insertion force flip-chip land grid array (LGA) CPU socket designed by Intel, compatible with Sapphire Rapids server and workstation processors, which was released in January 2023.^{[1] [2] [3]}

Features

• Support for PCI Express 5.0^[4] and Direct Media Interface 4.0
• Supports 8 channels of DDR5 RAM with error correction code support
• Intel Smart Sound Technology that provides dedicated audio voice processing to support voice wake functions is currently available only on the W790 chipset.^[5]

Chipsets

			Chipset
			C741	W790
Release date			January 2023	March 2023
Price (USD)			$70	$72
Overclocking
Bus Interface			DMI 4.0 x8	DMI 4.0 x8
CPU support			Sapphire Rapids-SP Emerald Rapids-SP	Sapphire Rapids-WS Sapphire Rapids-64L Sapphire Rapids-112L
Socket count			1s or 2S	1S
Memory capacity			Up to 4TB with one CPU or 8 TB with two CPUs	Up to 2TB (on W-2400 models) Up to 4TB (on W-3400 models)
Maximum DIMM slots			16 (1 CPU)32 (2 CPUs)	8 (W-2400)16 (W-3400)
Maximum USB 2.0 ports			14
USB 3.2 ports configuration	Gen 1 (5 Gbit/s)		10	10
	Gen 2	style=max-width:1em	x1 (10 Gbit/s)		10
		style=max-width:1em	x2 (20 Gbit/s)		5
Maximum SATA 3.0 ports			20	8
Processor PCI Express configuration		5.0	Up to 80 lanes	Up to 112 lanes
		4.0	colspan="2"
PCH PCI Express configuration		4.0		16
		3.0	20	12
Independent display support (digital ports/pipes)			colspan="2"
Wireless		Integrated
		Discrete
PCIe RAID support			colspan="2" rowspan="3"
SATA RAID support
Intel Optane Memory support
Intel Smart Sound Technology
Intel Active Management, Trusted Execution and vPro Technology			colspan="2"
Chipset TDP			11W	6W
Chipset package size			22mm × 23mm 506mm^2	28mm × 25mm 700mm^2

See also

• List of Intel microprocessors
• List of Intel chipsets

Notes and References

1. Web site: Mujtaba . Hassan . April 23, 2022 . Next-Gen AMD SP5 For EPYC Genoa & Intel LGA 4677 For Xeon Sapphire Rapids-SP Server CPU Platform Pictured, Over 30 VRMs & 32 DDR5 DIMM Slots In Dual-Socket Config . Wccftech . en-US . November 19, 2022.
2. Web site: Intel 4th Gen Xeon "Sapphire Rapids" CPU for LGA4677-X socket pictured . VideoCardz . en-US . February 4, 2021 . November 19, 2022.
3. News: Alcorn . Paul . February 15, 2023 . Intel Launches Overclockable Xeon W CPUs up to 56 Cores: a Return to HEDT-Class Chips . Tom's Hardware . en-US . March 18, 2023.
4. Web site: Intel Xeon Sapphire Rapids CPUs with DDR5 memory have been tested in AIDA64 . VideoCardz . en-US . February 12, 2022 . November 19, 2022.
5. Web site: List of Socket E Motherboards for LGA4677 - C741 W790 Chipsets . Faces of IT . 11 September 2024 . 5 May 2024.