I have a gigabyte R9 290X and I got sick and tired if adaptive voltage messing with stability so I decided to flash the PT3 bios that shamino put out. However after flashing the card with ATIWinFlash I restarted the computer and got all the way into windows to find out that nothing could recognize my GPU. I tried a second restart and same thing. The AMD driver nor windows nor gpu-z could recognize the gpu. So I flashed the gpu back to the gigabyte BIOS and it works again however I have no ideas to why PT3 won't work and I really want to get rid of the adaptive voltage that ramps my card down bellow 1.2v once it hits 80c regardless of the offset that I set

So does anyone know what I'm doing wrong or why it won't work?

Edited September 25, 201411 yr by buildzoid

try again can be a bad flash download the bios again

You will burn PWM with that bios. Stick to PT1 which has vdroop still (when you do flash it, double check that you are getting a significant vdroop on the GPU core). It won't work phases too hard and you can give cards decent voltage if you have decent cooling on them (PWM and core)

How much Vdroop does PT1 have? because I just want to set a static 1.3-1.375V(starts at 1.4V but drops way bellow once the core temps ramp up) on the core.

Edited September 25, 201411 yr by buildzoid

Same as regular bios. Do not flash to that bios because stock PWM won't handle it long term

Well I'll trial both with low volts (1.2V) to see how they behave under load. If PT1 isn't too bad I'll use PT1.

Edited September 25, 201411 yr by buildzoid