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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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Dimitrios1983
Senior Member



Posts: 255
Joined: 2018-03-01

#5753597 Posted on: 01/23/2020 07:17 PM
What's the lieing and tricking part about? Serious question here, what did I miss?


I'm guessing you're not an AMD fan or stock holder. She has said this when she accepted the CEO job at AMD. As a shareholder I have followed AMD's statements pretty well.

Francesco
Senior Member



Posts: 106
Joined: 2004-03-09

#5753607 Posted on: 01/23/2020 07:46 PM
What a great time to be not an Intel customer.

Undying
Senior Member



Posts: 14892
Joined: 2008-08-28

#5753609 Posted on: 01/23/2020 07:51 PM
History will repeat and Intel will bring us a core 2 duo era once again claiming the performance crown for another decade. Its inevitable. Until then its Ryzen time.

fantaskarsef
Senior Member



Posts: 12060
Joined: 2014-07-21

#5753658 Posted on: 01/23/2020 10:24 PM
I'm guessing you're not an AMD fan or stock holder. She has said this when she accepted the CEO job at AMD. As a shareholder I have followed AMD's statements pretty well.


So she said she lied and tricked Intel? That doesn't quite sound like her but alright, will have to take your word for it due to a lack of information on my end after asking.

Stormyandcold
Senior Member



Posts: 5589
Joined: 2003-09-15

#5753722 Posted on: 01/24/2020 02:58 AM
All bs to me, I need a built-in Thunderbolt 3 port on the motherboard, not the current add-in card thing. Come on Intel and AMD!!!

Also, I love this thread https://forums.guru3d.com/threads/nvidia-jen-hsun-huang-is-uncle-of-amd’s-ceo-lisa-su.422662/

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