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Guru3D.com » News » AMD: Pre-X570 boards will not support PCIe Gen 4

AMD: Pre-X570 boards will not support PCIe Gen 4

by Hilbert Hagedoorn on: 06/03/2019 07:24 AM | source: reddit | 31 comment(s)
AMD: Pre-X570 boards will not support PCIe Gen 4

Yes, that's what he said. Actually, AMD's Robert Hallock said that on Reddit. earlier on some motherboard manufacturers showed PCIe Gen 4.0 support in series 400 BIOSes. 

And that confirms it plain and simple. The new 500 series chipset will support PCIe express Gen 4.0 in combination with Ryzern 3000 processors. Anything below, simply not. Whether or not you'll find PCIe 4.0 a buying feature is also topic of debate, your GPU certainly will not need that bandwidth, and while PCIe Gen 4.0 based NVMe SSD(s) are fun, would you truly really need 5000 MB/sec in SSD performance, other than for bragging rights of course . 

"Hallock: This is an error we are correcting. Pre-X570 boards will not support PCIe Gen 4. There's no guarantee that older motherboards can reliably run the more stringent signaling requirements of Gen4, and we simply cannot have a mix of "yes, no, maybe" in the market for all the older motherboards. The potential for confusion is too high. When final BIOSes are released for 3rd Gen Ryzen (AGESA 1000+), Gen4 will not be an option anymore. We wish we could've enabled this backwards, but the risk is too great."

 

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

  







« QUAKE II RTX For Free This week · AMD: Pre-X570 boards will not support PCIe Gen 4 · Ryzen 3000 processors get Soldered IHS »

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Geoffrey Morris
Junior Member



Posts: 5
Joined: 2019-06-05

#5677085 Posted on: 06/05/2019 09:51 PM
Not having PCIe-4 is not a big deal, but they already enabled it on my Gigabyte X470 board and the F40 bios says full 3rd generation Ryzen CPU support. It is also running AGESA 1.0.0.2, so I have no clue what he means by final bios update. The whole thing sounds extremely fishy!

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