LGA 1851
LGA 1851 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 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 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 instead of two, in case of LGA 1700. Similar to AMD's AM5 socket, LGA 1851 only uses DDR5 SDRAM, dropping support for DDR4 and marking the end of mainstream DDR4 after 10 years.