Intel microprocessor compatible socket for Arrow Lake-S and Arrow Lake-S Refresh
LGA 1851
Designed by
Intel
Type
LGA-ZIF
Chip form factors
Flip-chip
Contacts
1851
FSB protocol
PCI Express
Processor dimensions
37.5 mm × 45 mm 1,687.5mm2
Processors
Meteor Lake-PS Arrow Lake Arrow Lake-S Refresh
Predecessor
LGA 1700
This article is part of the CPU socket series
LGA 1851 (codename Socket V1) is a land grid array CPU socket designed by Intel for Meteor Lake-PS, Arrow Lake-S and Arrow Lake-S Refresh desktop processors, estimated to release in 2024.[1]
The LGA 1851 socket uses the same dimensions and cooler hole spacing as LGA 1700, making LGA 1700 coolers compatible with the newer socket. The number of contacts has increased, from 1700 (for LGA 1700) to 1851 contacts.[2]
It offers 20 PCIe 5.0 lanes (x16 for the video card and x4 for storage) and an additional 4 PCIe 4.0 lanes for storage. The video card lanes can now be bifurcated to three devices (x8, x4, x4) instead of two for LGA 1700. It only supports DDR5 SDRAM, with no option for DDR4 SDRAM like on previous generation (LGA 1700).[3][4][5][6]
^"Intel CPU launch plans: Refreshes, Meteor Lake and Arrow Lake". June 22, 2023. Archived from the original on June 29, 2023. Retrieved June 29, 2023.
^Norem, Josh (June 23, 2023). "Intel Confirms Raptor Lake Refresh". ExtremeTech. Archived from the original on June 29, 2023. Retrieved June 29, 2023.
^Klotz, Aaron (September 21, 2023). "Intel's LGA 1851 Socket For 15th Gen Arrow Lake CPUs Detailed In 3D Schematics". HotHardware. Archived from the original on 24 December 2023. Retrieved December 24, 2023.
^"Intel LGA-1851 "Arrow Lake" Socket Detailed". TechPowerUp. September 21, 2023. Archived from the original on September 23, 2023. Retrieved December 24, 2023.
^Norem, Josh (July 18, 2023). "Intel's Upcoming LGA 1851 Socket Details Revealed". ExtremeTech. Archived from the original on December 24, 2023. Retrieved December 24, 2023.
^"Intel Socket LGA1851 Only Supports DDR5 Memory". TechPowerUp. August 21, 2023. Archived from the original on November 26, 2023. Retrieved November 26, 2023.
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