During a time of increased competitor activity, Intel has decided to disclose some of the high level details surrounding its next generation consumer processor, known as Rocket Lake or Intel’s 11th Gen Core. The new processor family is due in the market in the first quarter of 2021, and is expected to share a socket and motherboard compatibility with the current 10th Gen Comet Lake processors, providing an upgrade path even for those with a Core i9-10900K, Intel’s highest performing desktop processor to date. New 500-series motherboards are also expected to be available.

The new Rocket Lake-S silicon or SoC is going to be known as ‘Cypress Cove’. Intel confuses itself in the press release compared to the PDF presentation, as the press release dictates that this isn’t the core – it specifically states that the core microarchitecture is Ice Lake (Sunny Cove). However the presentation PDF says Cypress Cove is the core. In this instance, to be clear, Sunny Cove and Cypress Cove are set to be practically identical, however Sunny Cove is on 10nm and Cypress Cove is the back-ported variant on 14nm.

Paired with these cores will be the Tiger Lake graphics architecture, known as Xe-LP, which is also being backported from 10nm to 14nm for this product. The combined 14nm representation of Ice Lake cores and Xe-LP graphics is what is going to be known as Rocket Lake, (at least one of) the SoC(s) of the 11th Gen Core family.

With the new processors, Intel is targeting a raw instruction-per-clock uplift in the double digit range, which would be similar to the uplift we saw moving from Comet Lake to Intel’s Ice Lake mobile processors. Because of the node difference, the exact IPC change is likely to be lower than what we’ve seen before, but 10%+ is still highly respectable, especially if Intel is also able to maintain the high frequency it has achieved with the current generation of Comet Lake.

One of the benefits of moving to a back-ported Sunny Cove core will be the inclusion of the AVX-512 vector acceleration unit in Cypress Cove. This enables Intel to enable its library of Deep Learning Boost technologies for AI and ML acceleration, including support for Vector Neural Network Instructions (VNNI), finally bringing AVX-512 to the desktop platform.

However, to mix and match the right combination of core count, graphics, and AVX-512 for die size/yield/cost, it appears that Rocket Lake-S will only offer a maximum of eight cores in its largest configuration. Within the press release PDF, Intel stated that the current silicon as tested is rated for 125 W TDP, with a top turbo boost of 250 W, which matches what we see on the Core i9-10900K already. There’s no escaping the performance-per-watt characteristics of the process node, which indicates that Intel might find hitting those high frequencies a little easier with fewer cores to deal with. Intel is also promoting new overclocking tools with Rocket Lake, however did not go into details.

Another feature that Intel has disclosed with Rocket Lake is the move to PCIe Gen 4.0 on the processor, with up to 20 lanes available. These are likely to be split into one x16 for graphics and one x4 for storage on most motherboards, and this aligns with what we’ve seen on the latest generation of Intel Z490 motherboards, some of which have already promoted support for PCIe 4.0 ‘on future Intel processors’. This means Rocket Lake. Intel also mentions that the memory controller now supports up to DDR4-3200, however the projected performance numbers were done with DDR4-2933 memory.

On the graphics side, moving to the Xe-LP graphics architecture is going to be a big uplift in graphics performance, with Intel suggesting a 50% improvement over current Comet Lake integrated graphics. It is worth noting here in the slide that Intel mentions ‘UHD Graphics ft Xe Graphics Architecture’ – this would perhaps point to a scaled down version of Xe compared to Tiger Lake. I’m fully expecting to see only 32 EUs here, as a balance between die area, power, and performance. In the fine print it suggests that there will be some versions of Rocket Lake without the integrated graphics enabled, similar to the F processors we see on the market today.

That being said, for those units with integrated graphics, Intel is promoting new media encoders and display resolution support, with up to 4K60 12-bit for 4:4:4 HEVC and VP9, or up to 4K60 with 10-bit 4:2:0 AV1, showcasing AV1 support for mainstream processors. Display resolution support has also increased, with up to three 4K60 displays or two 5K60 displays, supporting DP 1.4a (with HBR3) and HDMI 2.0b.

This was an unexpected news announcement this morning - speaking to peers it all seems to be a bit of a surprise - perhaps even for the PR teams, given that the system configurations as 'projected' in the slide above is dated 6th August, almost 3 months ago. It will be interesting to hear if Intel will disclose more details ahead of launch.

Source: Intel

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  • Smell This - Thursday, October 29, 2020 - link

    It truly has to be exhausting working for Chipzillah these days
  • eastcoast_pete - Thursday, October 29, 2020 - link

    More on the other end of the price range, any idea if and when you'll get the i3-10000something with 4 cores/8threads for under $90 in for testing? That CPU could be really interesting for a plain potato home office/entry level gaming rig.
  • flgt - Thursday, October 29, 2020 - link

    I'm surprised AMD still won't include an integrated graphics solution in their latest Ryzen 5000 designs. There have to be a lot of vanilla corporate PC's out there. Their APU's aren't bad but they shouldn't let Intel compete against their previous generation.
  • Targon - Thursday, October 29, 2020 - link

    It is far easier to make a pure CPU than it is to then need to add graphics, which will also limit the CPU performance due to power and heat.
  • Spunjji - Friday, October 30, 2020 - link

    I believe that's going to be happening with Zen 4 "Raphael" in 2022.

    I think the biggest problem preventing that is that their APUs have had to be monolithic processors for performance reasons, which is in conflict with the chiplet strategy on the pure-CPU side of things. My best guess would be that Raphael resolves this by transitioning the IO die to a more dense process (7nm?) and using some of that space to integrate a small RDNA 2 GPU.
  • JayNor - Thursday, October 29, 2020 - link

    Ice Lake's Sunny Cove was advertised as 18% IPC improvement over Skylake.


    There should be additional performance gains (relative to Comet Lake) from new features of PCIE4 SSD, PCIE4 external gpu io and DDR4 3200 memory support.

    Intel provides avx512 support and simd support for Xe graphics in their oneDNN.

  • shabby - Thursday, October 29, 2020 - link

    Finally 10nm... oh wait nevermind 😂
  • SanX - Friday, October 30, 2020 - link

  • Jon Tseng - Thursday, October 29, 2020 - link

    What i never understand is why don't they tape out an enthusiast class CPU with no on-die graphics (obv the Ks just have it disabled) which would give them die space to squeeze in as many cores as you want. I mean if you think about how much die space in a 10900K is effectively dark silicon because its always gonna be tied to a GTX/RTX-glass GPU its a crime. Don't know if the issue is tape-out cost vs. low enthusiast volumes? Or worries it will overshadow the non-K APUs. But it seems to be a really obvious solution that is staring them in the face..
  • brucethemoose - Thursday, October 29, 2020 - link

    A significant fraction of the dies will end up in deskops with no dGPU.

    Still, this *is* a special case, as Rocket Lake clearly isn't going to end up in laptops, NUCs or anything low power. And now Intel has a dGPU to sell.

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