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Intel LGA 1851 Socket For Next-Gen Arrow Lake CPUs Unveiled in 3D Renderings

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Intel's "Supposedly Cancelled" Meteor Lake-S LGA 1851 Socketed Desktop CPU Pictured 1

Intel's latest "Innovation 2023" did bring the company's plans for the future such as Arrow Lake Desktop CPUs, but, details regarding the next-gen LGA 1851 socket were minimal. However, Igor's Lab has disclosed what the new socket type will bring on board, and it is pretty fascinating.

Intel Plans to Closing The Gap With AMD's Socket Type Through Massive Improvements in I/O Interfaces In Next-Gen LGA 1851 800-Series Boards

For those unaware, the LGA 1851 is the next iteration of Intel's desktop CPU socket, which will first support Arrow Lake CPUs by H2 2024. Although the release is still a year away, today's leak unveils Intel's "revamp" plans, especially in the area of data transfer and IO standards. Igor's Lab has been the first to reveal the final versions of the Independent Loading Mechanism (ILM) and 3D diagrams of the LGA 1851 socket.

Image Source: Igor's Lab

The ILM hasn't changed much compared to previous generations, which isn't an issue either way. However, Igor's Lab does highlight that Intel plans to significantly bump up the I/O interfaces on its next-gen CPUs, which is probably an attempt to bridge the gap created with AMD's next-gen AM5 socket which has been leading the charge when it comes to PCIe Gen 5.0 support.

Meanwhile, the blue team had to revert IO lanes from the dGPU lanes to enable Gen5x4 support on existing 700-series motherboards. The source states that Gen5 SSD connectivity is going to get a whole lot better, which means that we could see enhanced transmission speeds with the upcoming LGA 1851 standard.

screenshot-2023-09-20-at-3-06-35-pm
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This faster SSD connectivity analysis comes from the fact that LGA 1851 socketed CPUs will feature dedicated PCIe Gen 5.0 lanes. Moreover, you will also be getting a separate PCIe 5.0 x 16 slot for GPU connectivity. Regardless of the fact that PCIe Gen 5.0 hasn't received adoption from industry leaders like NVIDIA, Intel, and AMD, since the socket is set to release almost a year ahead, we could see a landscape shift.

Intel LGA 1851 socketed CPU layout. (Image Source: Igor's Lab)

Regarding the LGA 1851 motherboard chipsets, Intel yet again plans to release an extensive set including the likes of Z890, B860, and H810 models. The W880 and Q870 will be targeted towards a more professional stream, hence LGA 1851 is surely going to be a decorated socket type. It is also important to note that compatibility with DDR4 memory will completely be removed with LGA 1851, which points that the industry is indeed moving towards making DDR5 the next standard. The platform IO lanes are segmented as below:

  • Z890 - Total 80 HSIO Lanes (26 CPU / 34 PCH)
  • B860 - Total 44 HSIO Lanes (26 CPU / 18 PCH)
  • H810 - Total 32 HSIO Lanes (26 CPU / 6 PCH)

Intel was initially rumored to debut the LGA 1851 with Meteor Lake-S, but apparently, the plans have been shifted, with expected integration with Arrow Lake CPUs, which are set to drop somewhere in 2024.

Intel Z890 PCH blueprints. (Image Source: Igor's Lab)

It was reported that LGA 1851 would continue to be the standard until 2026, which seems reasonable given that the improvements it features are indeed planned for the future. One shouldn't worry about cooling solutions with the socket as well, since companies like Noctua have started preparing in advance a year early already.

Intel Desktop CPU Generations Comparison:

Processor FamilyProcessor ArchitectureProcessor ProcessProcessors Cores (Max)Platform ChipsetPlatform SocketMemory SupportTDPsPCIe SupportLaunch
Intel Sandy BridgeSandy Bridge32nm4/86-SeriesLGA 1155DDR335-95WPCIe 3.02011
Intel Ivy BridgeIvy Bridge22nm4/87-SeriesLGA 1155DDR335-77WPCIe 3.02012
Intel HaswellHaswell22nm4/88-SeriesLGA 1150DDR335-84WPCIe 3.02013-2014
Intel BroadwellBroadwell14nm4/89-SeriesLGA 1150DDR365WPCIe 3.02015
Intel SkylakeSkylake14nm4/8100-SeriesLGA 1151DDR435-91WPCIe 3.02015
Intel Kaby LakeKaby Lake14nm+4/8200-SeriesLGA 1151DDR435-91WPCIe 3.02017
Intel Coffee LakeCoffee Lake14nm++6/12300-SeriesLGA 1151DDR435-95WPCIe 3.02017
Intel Coffee Lake RefreshCoffee Lake14nm++8/16300-SeriesLGA 1151DDR435-95WPCIe 3.02018
Intel Comet LakeComet Lake14nm++10/20400-SeriesLGA 1200DDR435-127WPCIe 3.02020
Intel Rocket LakeRocket Lake14nm++10/20500-SeriesLGA 1200DDR435-125WPCIe 4.02021
Intel Alder LakeGolden Cove (P-Core)
Gracemont (E-Core)
Intel 716/24600-SeriesLGA 1700DDR5/DDR435-150WPCIe 5.02021
Intel Raptor LakeRaptor Cove (P-Core)
Gracemont (E-Core)
Intel 724/32700-SeriesLGA 1700DDR5/DDR435-150WPCIe 5.02022
Intel Raptor Lake RefreshRaptor Cove (P-Core)
Gracemont (E-Core)
Intel 724/32700-SeriesLGA 1700DDR5/DDR435-150WPCIe 5.02023
Intel Meteor LakeRedwood Cove (P-Core)
Crestmont (E-Core)
Intel 412/20800-SeriesLGA 1851DDR5-PCIe 5.0Cancelled
Intel Arrow LakeLion Cove (P-Core)
Skymont (E-Core)
Intel 20ATBD800-SeriesLGA 1851DDR5TBDPCIe 5.02024
Intel Panther LakeCougar Cove (P-Core)
Skymont (E-Core)
Intel 18A?TBD900-SeriesLGA 1851DDR5TBDTBD2025
Written by Muhammad Zuhair

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