Intel Rocket Lake-S desktop gaming CPUs are here – Ars Technica3 min read

https://arstechnica.com/gadgets/2021/03/intel-rocket-lake-s-desktop-gaming-cpus-are-here/

19 percent gen-on-gen IPC vs 10th gen desktop CPUs sounds great– however the verdict is out on the significance of the “up to” hedge, or the effect of reduced core count in the i9 CPUs.

Intel

Today, Intel announced its 11th generation S-series desktop CPUs, codenamed Rocket Lake-S. These are gaming-oriented processors enhanced for high clock rates and efficiency, coming in 19 SKUs ranging from i5-11400T through 19-11900K.
The new chips, based upon Intels Cypress Cove architecture, claim as much as a 19 percent increase in Instructions per Clock cycle– a very familiar figure, given that its the same number AMD declared for gen-on-gen IPC uplift in between its Zen 2 and Zen 3 architectures. Well do some hands-on benchmarking in the near future to identify how crucial the “approximately” hedge on that claim matters.
In the meantime, were cautiously positive about the “up to 19 percent IPC” and “up to 50 percent iGPU” efficiency Intel is declaring. As normal, the really huge numbers Intel shows for the new generation of processors dont have much to do with general-purpose CPU efficiency– theyre tied pretty directly to discovering AVX-512 enhanced workloads. The 19 percent isnt connected to AVX-512, and it has not come at the rate of reduced clock speeds or higher ranked TDP, either.
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Intel

Some 10th gen Core i3 and Pentium Gold CPU models also get a refresh this month– however theyre still 10th gen, not 11th.

Intel

Intel

Intel is likewise launching a brand-new Z590 motherboard chipset. Boards built on Z590 will offer 20 PCI Express 4.0 lanes, USB 3.2 Gen 2×2 20Gbps ports, Thunderbolt 4, and improved Direct Memory Interface. The new boards will likewise support 10th gen processors– however those older CPUs dont have PCIe 4.0 support, so do not expect a brand-new Z590 board to unlock it.
Rocket Lake-S CPUs are incompatible with H410 or B460 boards, and compatibility with Z490 doubts at best. We highly recommend a new Z590 board to go with it if you desire a Rocket Lake-S CPU.

In another familiar story for Intel, what the brand-new generation does quit is core count– although just at the Core i9 level. The i9-10900K was a 10 core, 125W TDP part with maximum single-core boost of 5.3 GHz; the i9-11900K matches the TDP and frequency however drops to eight cores. Core i7 and Core i5 CPUs stay 6c/12t and 8c/16t, respectively.
Ars has item samples of the i9-11900K and i5-11600K processors on hand, in addition to a brand-new Z590 chipset based motherboard. Well naturally be offering hands-on benchmark outcomes later this month.

Intel shows some relatively modest wins over Ryzen 9 5900X in some of its “RUG” workflow tests– but they lean greatly on AVX-512 optimizations, which many workloads will not share.

This table reveals all 10 Core i9 and Core i7 Rocket Lake-S CPUs. Note that Core i9 CPUs are below 10 cores to eight in this generation.

Intel

The new Intel Z590 boards generate support for PCI Express 4.0, Thunderbolt 4, and enhanced DMI. Z590 boards likewise support 10th gen Core processors.

The major modification in Core i5 CPUs from 10th gen to 11th is onboard graphics, which get a substantial bump to UHD 630 to UHD 730 or UHD 730.

Intel

Listing image by Intel

As normal, the actually big numbers Intel reveals for the new generation of processors dont have much to do with general-purpose CPU performance– theyre tied pretty directly to discovering AVX-512 enhanced work. Intel is likewise launching a brand-new Z590 motherboard chipset. In another familiar story for Intel, what the brand-new generation does offer up is core count– although just at the Core i9 level. The i9-10900K was a 10 core, 125W TDP part with maximum single-core boost of 5.3 GHz; the i9-11900K matches the TDP and frequency however drops to 8 cores. Core i7 and Core i5 CPUs remain 8c/16t and 6c/12t, respectively.

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