Intel Docs Confirm LGA 1851 Socket For Meteor Lake-S Desktop CPUs & LPDDR5X-7500 Memory Support

Jason R. Wilson
Intel Docs Confirm LGA 1851 Socket For Meteor Lake-S Desktop CPUs & LPDDR5X-7500 Memory Support 2
An Intel Meteor Lake test chip from Fab 42. (Image Credits: CNET)

Intel's website has content not accessibly available for public viewing, but ComputerBase located information on the sitemap disclosing information regarding Intel's next-gen Meteor Lake desktop CPUs which will get support on the latest LGA 1851 socket. The data lists information linking to a new CPU socket for the Meteor Lake desktop lineup & verifies the support for LPDDR5X-7500 memory.

Intel LGA 1851 Socket For Meteor Lake-S Desktop CPUs Confirmed Along With LPDDR5X-7500 Memory Support

The new LGA 1851 socket will house the new Intel Meteor Lake-S desktop CPUs. The socket is the exact dimensions as the LGA-1700 socket, with one slight difference. The IHS of the socket protrudes higher than previous sockets, which could ensure adequate room for Intel's new multi-tile technology. Another reason could be to avoid issues seen before with Intel's Alder Lake CPU deflecting and overheating due to strain from warping.

Intel LGA-1851 socket versus LGA-1700 socket. Image source: Benchlife

The information in the sitemap shows the following information, with a few highlighted areas showing the mentioned new socket.

Intel Docs Confirm LGA 1851 Socket For Meteor Lake-S Desktop CPUs & LPDDR5X-7500 Memory Support 3

There is also some valuable information from some of the links in the image above, such as (via Videocardz):

LGA 1851 Socket

  • lga1851-mtl-ps-interposer-for-the-gen5-vr-test-tool
  • lga1851-mtl-ps-interposer-prototypes-internal-only

Meteor Lake-S

  • meteor-lake-p-lpddr5x-7500-x32-type-4-alpha-pdk-for-memory-suppliers
  • meteor-lake-m-lpddr5x-6400-type-4-alpha-pdk-for-memory-suppliers
  • meteor-lake-s-ddr5-beta-cpu-upgrade-for-memory-suppliers

Arrow Lake-S

  • arrow-lake-s-ddr5-qual-cpu-upgrade-for-memory-suppliers

With this information, we can conclude that Intel has verified the existence of the new LGA 1851 socket and the preparation that it will be compatible with Meteor Lake and Arrow Lake desktop processors, as signified by the "S" labeling used. Also, with the information listed, we can conclude that the company will support LPDDR5X-7500 memory. Intel's Arrow Lake CPU lineup is anticipated to support LPDDR5X-8400 memory and DDR5 UDIMM and SO-DIMM versions with support for ECC.

The latest Intel roadmap shows 18A ready for risk production by 2H 2024, which is ahead of schedule.

Intel 14th Gen Meteor Lake Desktop CPU Lineup (2024)

Intel's 14th Gen Meteor Lake-S Desktop CPUs will take a step back and reduce the number of P-Cores while retaining the number of E-Cores. The lineup listed in leaked charts includes five different SKU configurations with the top variants featuring up to 22 cores in a combination of 6 P-Cores and 16 E-Cores. The P-Cores on the Meteor Lake CPUs are based on the brand-new Redwood Cove architecture while the E-Cores will utilize the Crestmont design. Both of these are new and improved architecture as reported by Coelacanth-Dream a few weeks back.

The full list of configurations includes:

  • Meteor Lake-S 22 (6P + 16E) / 4 Xe Cores / 125W TDP
  • Meteor Lake-S 22 (6P + 16E) / 4 Xe Cores / 65W TDP
  • Meteor Lake-S 22 (6P + 16E) / 4 Xe Cores / 35W TDP
  • Meteor Lake-S 14 (6P + 8E) / 4 Xe Cores / 65WTDP
  • Meteor Lake-S 14 (6P + 8E) / 4 Xe Cores / 35WTDP

In addition to the SKUs, we also get to learn that all SKUs will feature at least 4 Xe Cores for the iGPU and that's going to offer 64 Execution Units or 512 ALUs. That's 2 Xe Cores less than the DG2-powered Arc A310 graphics card which is the lowest-tier discrete board in the family but an integrated GPU with this much capability will be on par or even better than the RDNA 2 iGPU on AMD's Ryzen 7000 Desktop CPUs. Only the top die configuration will have a 125W "Unlocked" SKU range while the rest will come in the standard "Non-K" and "T" series with 65W and 35W TDPs.

The one thing to note here is that the 14th Gen Meteor Lake CPUs will only be available in up to Core i7 parts and there will be no Core i9 part due to the lowered core count. The CPU will retain the Intel 4 (CPU) + TSMC N5 (tGPU) + TSMC N6 (SOC) process nodes.

Intel Mainstream CPU Generations Comparison:

Intel CPU FamilyProcessor ProcessProcessor ArchitectureProcessors Cores/Threads (Max)TDPsPlatform ChipsetPlatformMemory SupportPCIe SupportLaunch
Sandy Bridge (2nd Gen)32nmSandy Bridge4/835-95W6-SeriesLGA 1155DDR3PCIe Gen 2.02011
Ivy Bridge (3rd Gen)22nmIvy Bridge4/835-77W7-SeriesLGA 1155DDR3PCIe Gen 3.02012
Haswell (4th Gen)22nmHaswell4/835-84W8-SeriesLGA 1150DDR3PCIe Gen 3.02013-2014
Broadwell (5th Gen)14nmBroadwell4/865-65W9-SeriesLGA 1150DDR3PCIe Gen 3.02015
Skylake (6th Gen)14nmSkylake4/835-91W100-SeriesLGA 1151DDR4PCIe Gen 3.02015
Kaby Lake (7th Gen)14nmSkylake4/835-91W200-SeriesLGA 1151DDR4PCIe Gen 3.02017
Coffee Lake (8th Gen)14nmSkylake6/1235-95W300-SeriesLGA 1151DDR4PCIe Gen 3.02017
Coffee Lake (9th Gen)14nmSkylake8/1635-95W300-SeriesLGA 1151DDR4PCIe Gen 3.02018
Comet Lake (10th Gen)14nmSkylake10/2035-125W400-SeriesLGA 1200DDR4PCIe Gen 3.02020
Rocket Lake (11th Gen)14nmCypress Cove8/1635-125W500-SeriesLGA 1200DDR4PCIe Gen 4.02021
Alder Lake (12th Gen)Intel 7Golden Cove (P-Core)
Gracemont (E-Core)
16/2435-125W600 SeriesLGA 1700/1800DDR5 / DDR4PCIe Gen 5.02021
Raptor Lake (13th Gen)Intel 7Raptor Cove (P-Core)
Gracemont (E-Core)
24/3235-125W700-SeriesLGA 1700/1800DDR5 / DDR4PCIe Gen 5.02022
Raptor Lake Refresh (TBA)Intel 7Raptor Cove (P-Core)
Gracemont (E-Core)
24/3235-125W700-SeriesLGA 1700/1800DDR5 / DDR4PCIe Gen 5.02023
Meteor Lake (TBA)Intel 4Redwood Cove (P-Core)
Crestmont (E-Core)
22/2835-125W800 Series?LGA 1851DDR5PCIe Gen 5.02024 (Cancelled)
Arrow Lake (TBA)Intel 20ALion Cove (P-Core)
Skymont (E-Core)
24/32TBA900-Series?LGA 1851DDR5PCIe Gen 5.02024
Arrow Lake Refresh (TBA)Intel 20ALion Cove (P-Core)
Skymont (E-Core)
TBATBATBALGA 1851?DDR5PCIe Gen 5.02025
Lunar Lake (TBA)Intel 18ATBDTBATBATBATBADDR5PCIe Gen 5.0?2025
Panther Lake (TBA)TBATBDTBDTBD1000-Series?LGA 1851?DDR5PCIe Gen 6.0?2026
Nova Lake (TBA)Intel 18ATBDTBATBA2000-Series?TBADDR5?PCIe Gen 6.0?2026

News Sources: ComputerBase, Intel, @harukaze5719 (Twitter), VideoCardz

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