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Guru3D.com » News » PCIe 4.0 feature pops up in X470 Motherboard BIOS

PCIe 4.0 feature pops up in X470 Motherboard BIOS

by Hilbert Hagedoorn on: 05/20/2019 07:40 AM | source: tomshardware | 31 comment(s)
PCIe 4.0 feature pops up in X470 Motherboard BIOS

The motherboard manufacturers are hard at work prepping X570 series motherboards for the new Ryzen 3000 processors. These will also bring PCI-Express 4.0 towards the eco-system. Interesting, Gigabyte released new BIOS updates for Ryzen 3000 compatibility to their (among others) X470 motherboards. And guess what the BIOS is showing?

IT seems that the company has added the option for PCIe 4.0 in the most recent bios update for its X470 Aorus Gaming Wi-Fi motherboard. This information was spotted by an observant Reddit user and then got verified by Tom's Hardware. Gigabyte has not yet made an official announcement about the new option.

It might be a crossover feature intended for X570 which propagated somehow towards X470. In an update from AMD they write:

300- and 400-series AM4 motherboards can support PCIe 4.0. AMD will not lock the out feature, instead it will be up to motherboard vendors to validate and qualify the faster standard on its motherboards on a case-by-case basis. Motherboard vendors that do support the feature will enable it through BIOS updates, but those updates will come at the discretion of the vendor. As mentioned below, support could be limited to slots based upon board, switch, and mux layouts.

PCIe VersionLine CodeTransfer Ratex1 Bandwidthx4x8x16
1.0 8b/10b 2.5 GT/s 250 MB/s 1 GB/s 2 GB/s 4 GB/s
2.0 8b/10b 5 GT/s 500 MB/s 2 GB/s 4 GB/s 8 GB/s
3.0 128b/130b 8 GT/s 984.6 MB/s 3.938 GB/s 7.877 GB/s 15.754 GB/s
4.0 128b/130b 16 GT/s 1.969 GB/s 7.877 GB/s 15.754 GB/s 31.508 GB/s

  



PCIe 4.0 feature pops up in X470 Motherboard BIOS




« AMD Epyc 2 processor with 32 cores appears in Online Database · PCIe 4.0 feature pops up in X470 Motherboard BIOS · Google To End Cooperation With Huawei, Intel Qualcomm and Microsoft join. »

7 pages 1 2 3 4 > »


Astyanax
Senior Member



Posts: 9566
Joined: 2018-03-21

#5670989 Posted on: 05/20/2019 07:49 AM
Some of the existing boards are built well enough to handle Gen 4 from the CPU controller.


Update: We spoke with AMD representatives, who confirmed that 300- and 400-series AM4 motherboards can support PCIe 4.0. AMD will not lock the out feature, instead it will be up to motherboard vendors to validate and qualify the faster standard on its motherboards on a case-by-case basis. Motherboard vendors that do support the feature will enable it through BIOS updates, but those updates will come at the discretion of the vendor. As mentioned below, support could be limited to slots based upon board, switch, and mux layouts.


Our sources tell us that after unlocking the feature via a BIOS update, the older motherboards supply a PCIe 4.0 x16 connection to the first slot on the motherboard, but the remainder of the slots revert to PCIe 3.0 signaling rates. That's because any trace routing on the motherboard that exceeds six inches requires newer redrivers and retimers that support PCIe 4.0's faster signaling rates. That means the PCIe slot nearest to the CPU will easily support PCIe 4.0, while the other slots, including M.2 ports, will run at a PCIe 3.0 signaling rate.


https://www.tomshardware.com/news/amd-ryzen-pcie-4.0-motherboard,38401.html

fantaskarsef
Senior Member



Posts: 12061
Joined: 2014-07-21

#5671006 Posted on: 05/20/2019 08:18 AM
That's actually pretty cool, even if the bandwidth doesn't find much practical use as of now, or am I wrong?

Undying
Senior Member



Posts: 14927
Joined: 2008-08-28

#5671008 Posted on: 05/20/2019 08:33 AM
That's actually pretty cool, even if the bandwidth doesn't find much practical use as of now, or am I wrong?


Not right now but it could be the near future. We just need more powerful gpus.

asturur
Senior Member



Posts: 1019
Joined: 2010-05-12

#5671015 Posted on: 05/20/2019 08:56 AM
or faster disks :)

Astyanax
Senior Member



Posts: 9566
Joined: 2018-03-21

#5671022 Posted on: 05/20/2019 09:14 AM
https://www.tomshardware.com/news/ssd-pcie-4.0-phison-nvme,38418.html

7 pages 1 2 3 4 > »


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