Red Team Discussions

[pakotxx]

Hello

Can RX 580/590 work on a legacy bios based motherboard (non uefi)

I have very old MSI 760GA-P43(FX).

I tried 5600 XT and 5700 - both dont work, had to return them.

Can somebody help, will rx 580/590 (or at least 570?...) work?

Thanks in advance.

[benman2785]

mh, even the 5600XT or 5700 should have worked - what PSU do you have?

[pakotxx]

Chieftec A-135 (APS-1000CB) 10000W

On other PC with the same PSU, but different motherboard - everything is ok

[benman2785]

mh, a RX470 or RX480 have worked with non-uefi bios before
usually i would think the RX580 should work too - but i am only sure for most RX480

[kumowoon1025]

I don't think the booter is the issue, besides, I've never heard of standalone graphics cards that are UEFI only. IME the efi portion of the firmware is always part of the usual vbios that controls the card during early boot, e.g. drives display output before OS and drivers load.

I'm thinking it's simply resource contention, bus and/or memory, do you have lighter cards you can try? (maybe something low profile, single slot, less-than-full-length?)

[pakotxx]

I have GTX 950 and it's working, without any problems.

I can enter bios with 5600 XT / 5700, but nothing else. I even tried to load from some USB to install system, tried even USB with Linux - nothing. System freezes. When I put back GTX 950 - all USB working

[benman2785]

did you uninstalled Nvidia drivers before you put in AMD GPU?
if not DO THAT - with latest DDU (DisplayDriverUninstaller)

[kumowoon1025]

IMO, that would be enough to convince me that it's a resource allocation issue. I had to look it up, but it looks like the most memory on a gtx950 is 2GB, and the 5700 has at least double the amount, and the same for bus width? The usb not working is probably due to the graphics card being on pretty much all PCIe lanes available.

[pakotxx]

Yes, of course,

And as I wrote above, I tried to boot from the USB drive, even with the HDD completely disconnected, everything is the same

[pakotxx]

Is there any way out of this? That is, the problem is that the 5600 XT and 5700 are 8 GB in size? What can be done? Need a video card with 2-4 GB? Or is it not the problem, and something else needs to be changed to work with 8 gb GPU?