Question Will AMD Radeon RX 5700 XT work on ASUS M5A78L-M/USB3?

[MalcolmKK]

Hi All,
I hope you are well.
I have this old PC with:
an AMD processor (AMD FX-8350, the most powerful I could install on this MB)
MB is ASUS M5A78L-M/USB3
32GB of RAM
The PSU is brand new Corsair TX650M.

Will this rather newish GPU work on it?
I think this GPU needs PCIe Gen3 to work.
The MB only has these slots:
1 x PCIe 2.0 x16
1 x PCIe 2.0 x1
1 x PCI

2x separate PCI power cables are connected to it.
I can get to BIOS but then when I want to boot to OS it goes blank.
I tried to boot to RescueCD USB stick but same thing - blank screen.

I was able to launch AMD Radeon RX 590 8GB on this system but it's a card from 2018 not from 2019.
Please let me know.
Thank you

 

[Imperat0r]

Hello.
Your current setup will support it.
The video card is backward compatible with the PCIe slots.
So no worry about that.
The problem is when OS (in your case Windows) loads its drivers, the card does not display anything.
In order to eliminate a problem, please take the card and test it in another computer.
If it works there we will try step by step to make it work in your system.
If it doesn't work there either, then you have an answer.

 

[MalcolmKK]

Hello.
Your current setup will support it.
The video card is backward compatible with the PCIe slots.
So no worry about that.
The problem is when OS (in your case Windows) loads its drivers, the card does not display anything.
In order to eliminate a problem, please take the card and test it in another computer.
If it works there we will try step by step to make it work in your system.
If it doesn't work there either, then you have an answer.

Thanks Imperat0r.
On another system (much much newer system)
Asus ROG Strix X570-E WIFI II
Chipset X570
AMD Ryzen 9 5950X 16-Core Processor

I have swapped my AMD Radeon RX 590 8GB with this card and it did boot up to the OS, in this case not to Windows but to Linux. It does work.

On the old system it felt like some issue with the card because after BIOS screen even SystemRescueCD (Linux) went blank.

Does it matter to which HDMI/DP port the monitor is connected to (for troubleshooting)?
I don't think so.

I can see people complaining about blank screen with this card and that some recent firmwares didn't improve or made things more unstable.
I just wonder if this was one of those firmwares flashed to this GPU.

Someone reported (not sure what motherboard) that he had to enforce PCIe Gen3 in BIOS for the card to work. In my case I cannot do that.
As you said it should work as it supposed to be backward compatible with Gen2.
AMD Radeon RX 590 8GB did work on this old MB.
By the way I did reset all the BIOS settings to defaults on that old MB.

 

[Imperat0r]

So you say that in current configuration your system works as it should?
Well that is a great info.

 

[LuKaWin10]

Hi All,
I hope you are well.
I have this old PC with:
an AMD processor (AMD FX-8350, the most powerful I could install on this MB)
MB is ASUS M5A78L-M/USB3
32GB of RAM
The PSU is brand new Corsair TX650M.

Will this rather newish GPU work on it?
I think this GPU needs PCIe Gen3 to work.
The MB only has these slots:
1 x PCIe 2.0 x16
1 x PCIe 2.0 x1
1 x PCI

2x separate PCI power cables are connected to it.
I can get to BIOS but then when I want to boot to OS it goes blank.
I tried to boot to RescueCD USB stick but same thing - blank screen.

I was able to launch AMD Radeon RX 590 8GB on this system but it's a card from 2018 not from 2019.
Please let me know.
Thank you

It can work! Put it in the X16 slot as it will deliver the most!

 

[MalcolmKK]

What I stated in my previous post was done on my newer system so at least we ruled out any hardware issues with the GPU which I am grateful.

How do you think what else should I try on the old system to make it work?
Any specific BIOS settings on that over decade old motherboard?