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
MSI Radeon RX 6900 XT GAMING X TRIO review
Guru3D Q1 Winter 20/21 PC Buyer Guide
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 Version | Line Code | Transfer Rate | x1 Bandwidth | x4 | x8 | x16 |
| 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 |
Fox2232
Senior Member
Posts: 11475
Joined: 2012-07-20
Senior Member
Posts: 11475
Joined: 2012-07-20
#5676347 Posted on: 06/03/2019 06:42 PM
Thats not how product support works. If you offer an option, it has to work. No amount of warnings will deter people from using it, expecting it to work, and whining about it not working.
Even if all you do is tell them "its not officially supported", it'll increase the support volume, and will be looked unfavorable upon by people encountering such problems.
If it does not work, reset BIOS. Same as with certain memory configurations preventing board form realizing it can't get it working.
Thats not how product support works. If you offer an option, it has to work. No amount of warnings will deter people from using it, expecting it to work, and whining about it not working.
Even if all you do is tell them "its not officially supported", it'll increase the support volume, and will be looked unfavorable upon by people encountering such problems.
If it does not work, reset BIOS. Same as with certain memory configurations preventing board form realizing it can't get it working.
D3M1G0D
Senior Member
Posts: 2068
Joined: 2017-03-10
Senior Member
Posts: 2068
Joined: 2017-03-10
#5676370 Posted on: 06/03/2019 07:43 PM
I'm not surprised, based on what I've read about PCIe 4.0. I'm also not particularly bothered by it, since I can't really make full use of lane bandwidth anyways. Of course 5 GB/s read for SSD is nice and all but I don't do heavy file transfers/editing, and GPUs don't come close to maxing out PCIe 3.0 lanes @ 16x.
I'll most likely wait until AMD's next socket for PCIe 4.0. We'll probably have more components that can make use of it by then. Of course those who can utilize the extra bandwidth might have to upgrade, but I think most of us will be fine with our current boards.
I'm not surprised, based on what I've read about PCIe 4.0. I'm also not particularly bothered by it, since I can't really make full use of lane bandwidth anyways. Of course 5 GB/s read for SSD is nice and all but I don't do heavy file transfers/editing, and GPUs don't come close to maxing out PCIe 3.0 lanes @ 16x.
I'll most likely wait until AMD's next socket for PCIe 4.0. We'll probably have more components that can make use of it by then. Of course those who can utilize the extra bandwidth might have to upgrade, but I think most of us will be fine with our current boards.
schmidtbag
Senior Member
Posts: 5634
Joined: 2012-11-10
Senior Member
Posts: 5634
Joined: 2012-11-10
#5676372 Posted on: 06/03/2019 07:46 PM
I'm betting PCIe 5.0 will be used by AMD's next socket, along with DDR5. The spec for PCIe 5.0 is already complete. I'm sure 4.0 will be very short-lived.
I'll most likely wait until AMD's next socket for PCIe 4.0. We'll probably have more components that can make use of it by then. Of course those who can utilize the extra bandwidth might have to upgrade, but I think most of us will be fine with our current boards.
I'm betting PCIe 5.0 will be used by AMD's next socket, along with DDR5. The spec for PCIe 5.0 is already complete. I'm sure 4.0 will be very short-lived.
Kaarme
Senior Member
Posts: 2265
Joined: 2013-03-10
Senior Member
Posts: 2265
Joined: 2013-03-10
#5676385 Posted on: 06/03/2019 08:40 PM
Thats not how product support works. If you offer an option, it has to work. No amount of warnings will deter people from using it, expecting it to work, and whining about it not working.
Even if all you do is tell them "its not officially supported", it'll increase the support volume, and will be looked unfavorable upon by people encountering such problems.
We are talking about bios here. It's full of switches and settings that can make your PC not boot, crash randomly, or produce errors. In ye olde times some bios might have allowed you to unlock a disabled core in an AMD CPU, even though that core might actually be broken.
Sure, it would work, as intended. That's why I said the manufacturer would need to do some checks beforehand. If it didn't work for a particular PC owner out there with their particular pile of hardware, well, that's tough luck. Just like some people receive a CPU that can OC extremely well, whereas another gets one that will only offer a pittance. All the support needs to do is to give advice on how ot reset te bios, which is also basic knowledge in the manual.
Thats not how product support works. If you offer an option, it has to work. No amount of warnings will deter people from using it, expecting it to work, and whining about it not working.
Even if all you do is tell them "its not officially supported", it'll increase the support volume, and will be looked unfavorable upon by people encountering such problems.
We are talking about bios here. It's full of switches and settings that can make your PC not boot, crash randomly, or produce errors. In ye olde times some bios might have allowed you to unlock a disabled core in an AMD CPU, even though that core might actually be broken.
Sure, it would work, as intended. That's why I said the manufacturer would need to do some checks beforehand. If it didn't work for a particular PC owner out there with their particular pile of hardware, well, that's tough luck. Just like some people receive a CPU that can OC extremely well, whereas another gets one that will only offer a pittance. All the support needs to do is to give advice on how ot reset te bios, which is also basic knowledge in the manual.
Click here to post a comment for this news story on the message forum.
Senior Member
Posts: 744
Joined: 2015-05-19
Thats not how product support works. If you offer an option, it has to work. No amount of warnings will deter people from using it, expecting it to work, and whining about it not working.
Even if all you do is tell them "its not officially supported", it'll increase the support volume, and will be looked unfavorable upon by people encountering such problems.