PC Building

[BOBU]

I bought a 6800xt at launch and it worked fine with my 5800x and tuf gaming x570. Recently I bought a 7800x3d and found that my 6800xt is unable to output the signal to the monitor. It goes wrong when I turn on SAM. I did some research and knew that it was because my vbios is old. But I can't find the latest vbios for my xfx merc319 6800xt. What should I do guys?

[Awol]

7800X3D has an APU, have you disabled it to make the 6800 XT your primary GPU

[BigAl01]

That's a first step.  The next step is to ensure you have the latest Adrenalin driver installed (currently still 24.12.1).  

As for the VBIOS, the XFX website says that you have a dual BIOS installed:

"We know enthusiast like options, so for our RX 6000 series graphics cards we are offering dual BIOS options. If you want a balance between performance and efficiency use the Balanced mode that the card ships in. If you want every ounce of performance the 6800 XT MERC 319 can give you, use the Rage BIOS. The Rage BIOS increases power delivery to the GPU increasing the max obtainable boost clocks."

You could flip that switch (with the power off), but they don't seem to have a VBIOS to download at this time.

Flip the switch and put the pedal to the metal.