I managed to unlock my Powercolor 7850's voltage by flashing to an Asus .rom.
Please be aware that this is very risky and might not work for you. I will not be responsible for what you do to your hardware.
In any event, I just used atiflash.exe from a dos usb key drive.
I typed:
atiflash -p -f 0 asus.rom
Just replace asus.rom with whatever rom you use.
Now I can hit 1260mhz on the core at 1.3v vs 1180mhz on the core at 1.225v.
Is 1260mhz a good core overclock for a 7850?
Oh yes I forgot to mention: make sure you use good cooling. I have an Arctic Cooling Twin Turbo II on mine and I only hit 50C under full load.
Please be aware that this is very risky and might not work for you. I will not be responsible for what you do to your hardware.
In any event, I just used atiflash.exe from a dos usb key drive.
I typed:
atiflash -p -f 0 asus.rom
Just replace asus.rom with whatever rom you use.
Now I can hit 1260mhz on the core at 1.3v vs 1180mhz on the core at 1.225v.
Is 1260mhz a good core overclock for a 7850?
Oh yes I forgot to mention: make sure you use good cooling. I have an Arctic Cooling Twin Turbo II on mine and I only hit 50C under full load.