| LGA 1851 | |
| Release-Date: | October 24, 2024 |
| Designed-By: | Intel |
| Formfactors: | Flip-chip |
| Type: | LGA-ZIF |
| Contacts: | 1851 |
| Protocol: | PCI Express |
| Dimensions: | 37.5 mm × 45 mm 1,687.5mm2 |
| Processors: | Meteor Lake-PS Arrow Lake |
| Memory: | DDR5 |
| Predecessor: | LGA 1700 |
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 in October 24, 2024.[1]
The number of contacts has increased, from 1700 (for LGA 1700) to 1851.[2] 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.[3] [4] [5] [6]
| Z890[7] | ||||
|---|---|---|---|---|
| Overclocking | ||||
| Bus Interface | DMI 4.0 ×8 | |||
| CPU support | Arrow Lake | |||
| Memory capacity | Up to 192 GB | |||
| Maximum DIMM slots | 4 | |||
| Maximum USB 2.0 ports | Up to 14 | |||
| USB 3.2 ports configuration | Up to 10 | |||
| Gen 2 | Up to 10 | |||
| Up to 5 | ||||
| Maximum SATA 3.0 ports | 8 | |||
| Processor PCI Express configuration | 5.0 | 1×16 or 2×8 or 1×8+2×4 | ||
| 5.0 (for M.2) | 1x4 | |||
| 4.0 (for M.2) | 1x4 | |||
| PCH PCI Express configuration | 4.0 | 24 | ||
| 3.0 | ||||
| Independent display support (digital ports/pipes) | 4 | |||
| Integrated wireless | ||||
| PCIe RAID support | ||||
| SATA RAID support | ||||
| Intel Optane memory support | ||||
| Intel Smart Sound technology | ||||
| Intel Active Management, Trusted Execution and vPro technology | ||||
| Chipset TDP | 6 W | |||
| Release date | Q4 2024 | |||