Intel Raptor Lake-S CPU platform: DDR5-5600 support, 16 PCIe 5.0 lanes

Intel's new 13th Gen Core 'Raptor Lake' CPU platform details: DDR5-5600 supported, PCIe 5.0 = 16 lanes for GPU, no PCIe 5.0 SSDs.

4 minutes & 18 seconds read time

Intel's new 13th Gen Core "Raptor Lake" CPUs are a few months away yet, but we've got previews and reviews out already, and now some more details are coming out from a presentation held in Shenzen, China, by Intel this week.

Intel Raptor Lake-S CPU platform: DDR5-5600 support, 16 PCIe 5.0 lanes 01

The meeting itself saw Intel focusing on NAS products and other roadmaps, but there was a slide that Intel had up titled "Raptor Late-S Platform Overview" with some new details. The slide teases that Intel's next-gen Raptor Lake-S will support DDR5-5600 memory officially, a big jump over the current 12th Gen Core "Alder Lake" CPUs with support for DDR5-4800 (the JEDEC default for DDR5).

Not only that, but the slide also means that Intel's upcoming Raptor Lake CPUs will have support for DDR4 memory, with up to DDR4-3200 supported. Intel's current-gen 600-series chipset and its associated motherboards have SKUs with DDR4 or DDR5 memory, so it looks like we can expect the same for the upcoming 700-series chipsets: motherboards with either DDR4 or DDR5 memory.

My attention is with the PCIe 5.0 lanes on the Raptor Lake-S platform overview, where Intel says that the CPU will have 16 lanes of PCIe 5.0 and 4 lanes for PCIe 4.0. Intel does note "additional PCH PCIe 4.0 lanes" on Raptor Lake.

This means that if you have a juicy new, next-gen PCIe 5.0-capable GPU that uses 16 lanes of PCIe 5.0, you won't be able to have a new PCIe 5.0-capable SSD at the same time. Well, you will... but the PCIe 5.0 GPU will be sharing the 16 lanes of Gen5 goodness with the PCIe 5.0 SSD.

Intel Raptor Lake-S CPU platform: DDR5-5600 support, 16 PCIe 5.0 lanes 02

We won't know if you'll need all 16 lanes of PCIe 5.0 on a next-gen GPU to pull everything from it -- but you sure as hell don't need 16 lanes of PCIe 4.0 to enjoy the best GPUs using that standard -- AMD's fastest Navi 21-powered Radeon RX 6950 XT graphics card, or NVIDIA's new GA102-based GeForce RTX 3090 Ti graphics card. They'll perform beautifully, even on PCIe 4.0 x8 with 8 lanes, down from 16 lanes.

If you want to use a full-speed PCIe 5.0 SSD then you'll need 4 lanes for the most part, until you start using bigger RAID cards and wanting to drive something like Sabrent's everything-destroyer in the new Rocket 4 Plus Destroyer 2 SSD. That beast brings up to 64TB of SSD speeds at an insane 28GB/sec speeds... all over PCIe 4.0 x16.

If you're using a next-gen Gen5-capable SSD on PCIe 5.0 x4 (4 lanes) then you'll enjoy up to 15-16GB/sec reads out of next-gen SSDs. Using the full 16 lanes on a PCIe 5.0 x16 slot will deliver up to 64GB/sec on next-gen SSDs of the future (in RAID cards like Sabrent's new Rocket 4 Plus Destroyer 2 SSD).

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Anthony joined the TweakTown team in 2010 and has since reviewed 100s of graphics cards. Anthony is a long time PC enthusiast with a passion of hate for games built around consoles. FPS gaming since the pre-Quake days, where you were insulted if you used a mouse to aim, he has been addicted to gaming and hardware ever since. Working in IT retail for 10 years gave him great experience with custom-built PCs. His addiction to GPU tech is unwavering and has recently taken a keen interest in artificial intelligence (AI) hardware.

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