Intel Rocket Lake-S PCIe 4.0 performance allegedly tested on Z490 motherboard

Published: Oct 9th 2020, 13:19 GMT   Comments

Intel’s Rocket Lake CPU tested in PCIe 4.0 performance

As we learn more about Rocket Lake-S, the upcoming Intel 11th Gen Core series for desktops, more and more leaks are beginning to appear. Shortly after we revealed that Intel Rocket Lake is currently planned for Q1 2021, Intel official confirmed this fact on its official blog.

The 11th Gen core series will feature Intel’s new 14nm core design (rumored Willow/Cypress Cove) and integrated Xe-LP graphics. Both represent a major transformation for Intel’s now outdated Skylake architecture. The series will also be the first to support PCI Express 4.0 devices, an interface standard that has been available to AMD 400 and 500-series platforms for a long time.

Taiwanese leakers allegedly had access to one of such ‘next-generation’ CPUs and they immediately tested it on the Z490 motherboard. Motherboard manufacturers were eager to confirm that their first LGA1200 motherboards are already hardware-ready for the new PCIe standard.

Two screenshots were posted by ITCooker, featuring Seagate FireCuda 520 PCIe 4.0 SSD and AMD Radeon RX 5700XT graphics card. Both were correctly recognized as PCIe 4.0-capable devices by Crystal Disk Mark 8 for SSD and GPU-Z for the graphics card.

A 5 GB/s sequential (Q8T1) read and 4.2 GB/s write performance were reported by CristalDiskMark. Such throughput is only available through the PCIe 4.0 interface. The GPU was stress tested with Furmark, where GPU-Z reports PCIe  x16 4.0 @ x16 4.0 active bus interface. This confirms that both SSD and GPU were using the Gen4 standard.


INTEL Next Generation CPU can use Z490 line PCIE 4.0
Fortunately, some Taiwanese friends borrowed PCIE 4.0 SSD for testing
AMD 5700 XT is used for PCIE 4.0 but CPUZ cannot read memory
After that, I’ll have a chance to test the super frequency again

Intel Rocket Lake-S PCIe 4.0 SSD Performance, Source: ITCooker

Intel Rocket Lake-S PCIe 4.0 GPU Performance, Source: ITCooker

Full screenshots:

INTEL Mainstream CPU Series Specs
VideoCardz.comCoffee Lake-SComet Lake-SRocket Lake-SAlder Lake-SMeteor Lake-S
Launch Year2018202020212H 20212022-2023
Fabrication Node14nm14nm14nm10nm SuperFin7nm SuperFin?
Core µArchSkylakeSkylakeWillow (Cypress) CoveGolden Cove + GracemontOcean Cove + Gracemont
Graphics µArchGen9Gen9.5Gen12Gen12 TBCGen 13 TBC
Max Core Countup to 8 coresup to 10 coresup to 8 coresup to 16 (8+8)TBC
Memory SupportDDR4DDR4DDR4DDR5DDR5
PCIe GenPCIe 3.0PCIe 3.0PCIe 4.0PCIe 5.0PCIe 5.0
Intel Core Series8th/9th Gen Core-S10th Gen Core-S11th Gen Core-S12th Gen Core-S (?)13th Gen Core-S (?)
Motherboard ChipsetsIntel 300 (eg. Z390)Intel 400 (eg. Z490)Intel 500 (Z590)Intel 600 (eg. Z690) (?)Intel 700 (eg. Z790) (?)

Intel Rocket Lake-S Features

Source: ITCooker

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