LGA 1851
| Release date | October 24, 2024 |
|---|---|
| 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 |
| Predecessor | LGA 1700 |
| Successor | LGA 1954 |
| Memory support | DDR5 |
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 and Arrow Lake-S desktop processors, released on October 24, 2024.
The number of contacts has increased, from 1700 (for LGA 1700) to 1851. It uses the same dimensions and cooler mounting hole spacing as LGA 1700, ensuring continued CPU cooler compatibility.
It offers 20 PCIe 5.0 lanes (x16 for the expansion cards and x4 for storage) and an additional 4 PCIe 4.0 lanes for storage. The available PCIe lanes for the expansion cards can now be bifurcated to three devices (x8, x4, x4) instead of two, in case of LGA 1700. Similar to AMD's AM5 socket, it is exclusively on DDR5 SDRAM, dropping support for DDR4 unlike its predecessor (LGA 1700), marking the end of mainstream DDR4 after 10 years.