I've heard of voltage softmods before for the x800 series (ie. Toxic x800pro comes with its own software to change voltage) and i found a thread on XS that changes the voltage through a bios mod (6800GT).
http://www.xtremesystems.org/forums/...ad.php?t=52127
Why is there nothing like this for x800 users? Could this not be added to ATItool as well for testing purposes?