Question Vastarmor RX 6600 - - - - installed AMD drivers create visual artifacts on screen ?

[Hooley]

Heyo, here's a fun little puzzle.
I have bought a broken Vastarmor RX 6600 Starry Sky.
Seller claimed that he tried to reflash this GPU with a Sapphire BIOS, which led to artifacts starting to appear on the screen. He tried to flash it back on to the original BIOS from the BIOS database but artifacts remained.

GPU-Z doesn't shows any missing info, AMD flash shows a pass.
Important: Artifacts appear only with installed AMD drivers. No artifacts have been witnessed in motherboard BIOS screens or with standard windows drivers.

OCCT tests show errors, both RAM tests and adaptive 3D.

Could this truly be caused by a wrong BIOS?
Or maybe I was lied to and the issue is possibly with GPU RAM?

System Specs:
CPU: Ryzen 5 3600
Motherboard: Asus TUF Gaming B550-Plus
GPU: Vastarmor RX 6600 Starry Sky
PSU: Xilence Gaming Series XN225 650W CM

 

[Lutfij]

Welcome to the forums, newcomer!

PSU: Xilence Gaming Series XN225 650W CM
How old is this unit? Do you have access to a reliably built PSU with at least 650W of power at the entire system's disposal?

 

[helpstar]

could be both, if the wrong BIOS is installed, VRAM might not be correctly set, wrong frequency or timings

reflash the correct BIOS for this GPU

 

[Hooley]

Welcome to the forums, newcomer!

PSU: Xilence Gaming Series XN225 650W CM
How old is this unit? Do you have access to a reliably built PSU with at least 650W of power at the entire system's disposal?

It has been in my possession for a year. Sadly it's the only reliable PSU currently in my possession.

 

[Hooley]

could be both, if the wrong BIOS is installed, VRAM might not be correctly set, wrong frequency or timings

reflash the correct BIOS for this GPU

Sadly I lost THE original BIOS, but I tried pretty much every BIOS for Vastarmor RX6600 or with the same subsystem ID in BIOS DB, the problem still persists.

 

[helpstar]

run userbenchmark.com and post the link of the result

 

[Hooley]

run userbenchmark.com and post the link of the result

Here you go
https://www.userbenchmark.com/UserRun/67230397

 

[helpstar]

did you try this one yet?
https://www.techpowerup.com/vgabios/246853/246853
after flashing, always restart windows and use fresh driver install to be sure it´s not a drivers issue

 

[Hooley]

did you try this one yet?
https://www.techpowerup.com/vgabios/246853/246853
after flashing, always restart windows and use fresh driver install to be sure it´s not a drivers issue

yep, tried that one too.
did a full cleanup of drivers and reinstalled them. sadly, the artifacts still persist.

 

[helpstar]

try altering the frequencies by msi afterburner or similar

 

[Hooley]

try altering the frequencies by msi afterburner or similar

Did that too, tried all to minimals and max, artifacts still appear.

 

[helpstar]

then most likely your gpu is faulty