I need help finding the correct vBIOS for my Chinese graphics card. It's an RX 580

[Urack]

It's an RX 580, clearly an SP2048. It has no brand and nothing that would indicate which brand it could be. I've tried many vBIOS versions and managed to find a few that work correctly, giving me acceptable performance for the type of GPU it is.


The problem is that I can't increase my monitor's refresh rate with these BIOS versions — I'm only allowed to use 60Hz at 1920x1080p. When I try to increase the Hz, the resolution drops. The higher the refresh rate, the lower the resolution. I'm using HDMI 2.1, and DisplayPort doesn't work.


I've attached a GPU-Z screenshot. I don’t know what else to try, but I have access to practically all the relevant information needed to find the correct BIOS — I just can’t seem to identify it in any way. Please help!

 

[eidairaman1]

What monitor do you have, model number wise?

Also since the wrong bios is on the card now, you need to remove the heatsink and get a picture of a ram chip please and also a complete board shot front and back

 

[Urack]

What monitor do you have, model number wise?

I have a Samsung Odissey G4 27” 240hz, this gpu is for my girlfriend’s pc

 

[Urack]

What monitor do you have, model number wise?

Also since the wrong bios is on the card now, you need to remove the heatsink and get a picture of a ram chip please and also a complete board shot front and back

It is enough?

 

[Urack]

What monitor do you have, model number wise?

Also since the wrong bios is on the card now, you need to remove the heatsink and get a picture of a ram chip please and also a complete board shot front and back
I downloaded the BIOS that matches the information shown in GPU-Z, which led me to the BIOS of an HIS-branded graphics card, specifically the IceQ X2 OC model. However, it didn’t work properly with that BIOS — it wouldn't even let me change the resolution, adjust the monitor’s refresh rate, or open any game (none of them worked).


Then I tried a generic RX 570 BIOS, and it started working normally, but GPU-Z began showing strange values.

The BIOS versions that gave me the most accurate and stable performance with the GPU were the generic ones, not the official ones. Most of the BIOS files I’ve installed are unverified files that match the Subsystem ID, Device ID, Shaders, and the specific Samsung memory model I have (Samsung K4G80325F).


I have a theory that this is probably a downscaled version of the RX 580 8GB with 2048 SP and GDDR5 memory. I haven’t tested many vBIOS versions with 2304 SP, but I don’t think they will work as expected. Now I'm attaching more images so you can see all the details and markings present on the GPU.

 

[VuurVOS]

215-0876406 = Polaris with 2048SP enabled. (RX470/RX570/RX580 2048SP)

Did the card work properly before? Try this bios:

ASRock RX 570 8 GB VBIOS

8 GB GDDR5, 1250 MHz GPU, 1750 MHz Memory

www.techpowerup.com

 

[Urack]

215-0876406 = Polaris with 2048SP enabled. (RX470/RX570/RX580 2048SP)

Did the card work properly before? Try this bios:

ASRock RX 570 8 GB VBIOS

8 GB GDDR5, 1250 MHz GPU, 1750 MHz Memory

www.techpowerup.com

I tried the BIOS you sent me (the one recommended by Gemini 2.5 Pro), but it didn’t work either. I’ve been testing a wide variety of RX 570 8GB BIOS files with K4G80325F VRAM. They work normally for a couple of hours, but then they start showing artifacts.
I’ve ruled out memory issues using GPU stress tests — I ran FurMark and the GPU responded normally. However, it still doesn’t allow me to go above 1080p resolution or higher than 60Hz refresh rate.
4o

 

[VuurVOS]

They work normally for a couple of hours, but then they start showing artifacts.

Does it happen when the system is idle or under load?