I don't know if this is in the right forum, but I can't unlock voltage in MSI AB, and the version of GPU Tweak I am using has voltage unlocked, but is in sync with core clock, and I can't overclock core clock past 1125mhz in GPU Tweak. The card I have is an Asus HD 7970 DC2. Other forums and websites say that this HD 7970 is voltage locked. Is that true? I already tried MSI AB cfg thing, doesn't work. I don't want to risk flashing bios. Is there another way? Sorry if this has been asked a billion times.