Dragram - Yeah. I used to mod my HD5970's BIOS. From what I have read, modding a GTX 680 BIOS is basically the same in concept, minus the boost aspect (obviously). The only reason why my 680 does not have a modded BIOS with custom voltages is beecause I don't want to hard mod the card. I would suspect that manufacturers give a little voltage overhead to ensure stability. It would be silly for a card to potentially operate at the bare minimum required voltage, since that could potentially introduce general instability. Obviously there could be a number of cards out there with a BIOS that does not guarantee stability. Oversights like that do happen, and games like PS2 can expose such issues. Its a shame though that there's no way for a user to grab a BIOS update without going out of their way.