Guru3D.com
  • HOME
  • NEWS
    • Channels
    • Archive
  • DOWNLOADS
    • New Downloads
    • Categories
    • Archive
  • GAME REVIEWS
  • ARTICLES
    • Rig of the Month
    • Join ROTM
    • PC Buyers Guide
    • Guru3D VGA Charts
    • Editorials
    • Dated content
  • HARDWARE REVIEWS
    • Videocards
    • Processors
    • Audio
    • Motherboards
    • Memory and Flash
    • SSD Storage
    • Chassis
    • Media Players
    • Power Supply
    • Laptop and Mobile
    • Smartphone
    • Networking
    • Keyboard Mouse
    • Cooling
    • Search articles
    • Knowledgebase
    • More Categories
  • FORUMS
  • NEWSLETTER
  • CONTACT

New Reviews
Radeon Series RX 6700 XT preview & analysis
Corsair MM700 & Corsair Katar Pro XT Review
Guru3D Rig of the Month - February 2021
ASUS GeForce RTX 3060 STRIX Gaming OC review
EVGA GeForce RTX 3060 XC Gaming review
MSI GeForce RTX 3060 Gaming X TRIO review
PALIT GeForce RTX 3060 DUAL OC review
ZOTAC GeForce RTX 3060 AMP WHITE review
Fractal Design Meshify 2 Compact chassis review
Sabrent Rocket 4 PLUS 2TB NVMe SSD review

New Downloads
ClockTuner for Ryzen (CTR) v2.0 RC4 Download
SiSoft Sandra 20/21 download v31.12
Intel HD graphics Driver Download Version: DCH 27.20.100.9316
AIDA64 Download Version 6.32.5644 beta
FurMark Download v1.25
MSI Afterburner 4.6.3 Final Stable Download
Display Driver Uninstaller Download version 18.0.3.7
Guru3D RTSS Rivatuner Statistics Server Download 7.3.0 Final
Media Player Classic - Home Cinema v1.9.10 Download
GeForce 461.72 WHQL driver download


New Forum Topics
Vulkan Beta Driver GeForce Hotfix Driver Version 461.81 AMD announces Radeon RX 6700 XT 12GB at 479 USD, launches on March 18th AMD Radeon Software Adrenalin 2020 Edition 21.2.3 NVidia Anti-Aliasing Guide (updated) 461.72 - Clean Version ClockTuner v2.0 RC4 for Ryzen (CTR) info and download Review: Sabrent Rocket 4 PLUS 2TB NVMe SSD (breaching that 7 GB/sec) Intel Re-Confirms March 30 for Rocket Lake-S Launch AMD Releases Ryzen Threadripper PRO, professional CPU series




Guru3D.com » News » Intel Comet Lake-S CPUs and Z490 boards support PCI-E 4.0 (but it's not active)

Intel Comet Lake-S CPUs and Z490 boards support PCI-E 4.0 (but it's not active)

by Hilbert Hagedoorn on: 01/22/2020 12:21 PM | source: tomshardware | 42 comment(s)
Intel Comet Lake-S CPUs and Z490 boards support PCI-E 4.0 (but it's not active)

A new report on the web indicates that the upcoming Comet Lake-S processors (tenth generation of Intel Core for desktop) actually do support PCI Express 4.0, some Z490 motherboards are designed for it as well. However an issue prevents PCIe 4.0 to become usable, so the platform will support PCI-E 3.0 instead.

The reason behind this is presence of Jitter in the Z490 chipset signal, that causes instability in the data signal and that menas that specifications required for the PCI-Express 4.0 certification are simply not met. PCI-E 4.0 is working at very high frequencies, and that requires that the signal be completely clean.

 

 

Several manufacturers added external clock generators to eliminate this Jitter, however not everyone did, so Intel made the decision to not support PCI-E 4.0 on this new platform. 



Intel Comet Lake-S CPUs and Z490 boards support PCI-E 4.0 (but it's not active)




« Grab for free: All Half Life games · Intel Comet Lake-S CPUs and Z490 boards support PCI-E 4.0 (but it's not active) · MSI Creates new Radeon RX 5600 XT Gaming Z SKU due to performance firmware updates »

Related Stories

Intel Comet Lake i5 and i3 spotted, both get HyperThreading but lower clock speeds - 12/28/2019 09:11 AM
Some info on Intels' pending Comet Lake processors has surfaced. The 14nm node fabricated processors are assumed to launch in April. Earlier on it was kind of confirmed that the lower positioned pro...

Intel Core i9-10900K 10-core Processor and Z490 Chipset Rumored to be released April 2020 - 12/10/2019 08:36 AM
Intel Generation 10 Comet Lake processors, based on Intel's 14nm process and an underlying microarchitecture that is Skylake is next year's desktop processor series from Intel. It makes a step towar...

ASUS to release X299 BIOS Updates for Intel Core i9-10980XE, 10940X, 10920X and 10900X - 12/02/2019 08:26 AM
Much like MSI, ASUS as well will be releasing new firmware updates soon for their X299 motherboards, specifically for Intel Core i9-10980XE, 10940X, 10920X and 10900X, and an effort to make them over...

Review: Intel Core i9 9900KS Special edition processor - all cores at 5 GHz - 11/15/2019 12:34 PM
Intel has released its flagship desktop processor in the non-HEDT segment. The 9900KS is their most premium Coffee Lake-S eight-core processor that has been discussed so abundantly. This little beast ...

Intel Core i9-10980XE Cascade Lake-X Benchmarks - 10/25/2019 01:30 PM
The way Intel distributed samples on processors to media remains a mystery, however over in Romania the first review on the Core i9-10980XE, surfaced. It's written by our colleage Tudo who tested Ca...


9 pages « 2 3 4 5 > »


tunejunky
Senior Member



Posts: 1217
Joined: 2017-08-18

#5753210 Posted on: 01/22/2020 03:06 PM
Ok, maybe in 2028 we can see any improvement using pci expresd 4.0 over 3.0 on new top high end videocard


for games, sure.
but if you're a content creator the future is now. remember time = money, now leverage threadripper 3/ ryzen 2 with (most likely an Instinct) a pcie 4.o gpu and you're saving days of work in a week.

tunejunky
Senior Member



Posts: 1217
Joined: 2017-08-18

#5753211 Posted on: 01/22/2020 03:08 PM
Is not about videocards, but about lines availability.
If pciEx4 is double fast than 3, i can use 8 line instead of 16 on a pci express 4.0 video card, get the performance of 3.0 at 16x. Use the free 8 lines for something else ( another nvme for example, a fast one )

exactly. and if that nvme is also pcie 4.0, along with the gpu you can do tons of work in little time

wavetrex
Senior Member



Posts: 1368
Joined: 2008-07-16

#5753237 Posted on: 01/22/2020 05:23 PM
Just wait until nVidia announces their new generation Ampere, or 3000 series or whatever the name is and it will be PCIe 4.0 cards.
And AMD's RDNA(2) products will obviously be 4.0 as well.

No-one in their right minds would buy Z490 to willingly give up performance on their shiny new latest generation GPUs... especially considering that AMD's next gen with even more IPC and probably more clocks as well is basically just 6-7 months away from release.

How could they (Intel) screw this up so badly !?

schmidtbag
Senior Member



Posts: 5640
Joined: 2012-11-10

#5753244 Posted on: 01/22/2020 05:49 PM
Is not about videocards, but about lines availability.
If pciEx4 is double fast than 3, i can use 8 line instead of 16 on a pci express 4.0 video card, get the performance of 3.0 at 16x. Use the free 8 lines for something else ( another nvme for example, a fast one )
It only works that way if the device itself is PCIe 4.0 compatible. A 3.0 card in a 4.0 slot is still only going to operate at 3.0 speeds.

EspHack
Senior Member



Posts: 2641
Joined: 2010-01-03

#5753253 Posted on: 01/22/2020 06:38 PM
maybe at gen 5.0 we will finally have enough lanes that we can spare some for 10g ethernet, and phones will be doing 50gbit lifi by then

9 pages « 2 3 4 5 > »


Post New Comment
Click here to post a comment for this news story on the message forum.


Guru3D.com © 2021