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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 »

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red1776
Junior Member



Posts: 12
Joined: 2011-05-20

#5753353 Posted on: 01/23/2020 12:59 AM
Intel can´t get anything right nowadays... What´s happening inside the company???

Probably the same classic thing that has happened to most corporations...
Success and domination breed complacency and the underestimating of your competition.
Lisa should dispatch someone to print out the news/reviews from everyday from the Intel Core 2 days, label it 'how not to rest on our laurels' and distribute it to every executive in the company.
...and then go find the next Jim Keller.

Just a thought...

sverek
Junior Member



Posts: 6074
Joined: 2011-01-02

#5753354 Posted on: 01/23/2020 01:04 AM
Hope somebody gets fired for this huge fail.

Why you hope to see people being fired? Is it some kind of stress relief to you?

asturur
Senior Member



Posts: 1025
Joined: 2010-05-12

#5753364 Posted on: 01/23/2020 01:39 AM
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.


Is exactly what i wrote. A 3.0 card is just a 3.0 card.
A 4.0 card on a 4.0 platform offer you more flexibility with 3.0 x16 equivalent performance. ( if the motherboard is properly wired up to do so )

Dazz
Senior Member



Posts: 909
Joined: 2001-08-12

#5753366 Posted on: 01/23/2020 02:06 AM
Probably the same classic thing that has happened to most corporations...
Success and domination breed complacency and the underestimating of your competition.
Lisa should dispatch someone to print out the news/reviews from everyday from the Intel Core 2 days, label it 'how not to rest on our laurels' and distribute it to every executive in the company.
...and then go find the next Jim Keller.

Just a thought... After the Pentium 4 days Intel said it would never happen again, but you know, history has a tendency to repeat it's self.

Dimitrios1983
Senior Member



Posts: 255
Joined: 2018-03-01

#5753389 Posted on: 01/23/2020 04:37 AM
wow more incompetence from Intel, I'm shocked. The company needs a new CEO to bad Lisa Su has a job.


If that happened AMD would be bankrupt. Lisa Su working for INTEL would be the most deadly company in my eyes.

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