Then you might as well have a word with our resident overclocker 8Pack who also works for OcUK:
http://forums.overclockers.co.uk/showthread.php?t=18604831
He does overclocking stuff(including record attempts),with both AMD and Nvidia hardware.
He does it as well. When he does the run on AMD, the bench has tesseltaion modified but that is acceptable on HWbot, so that's why he and all the other pro benchers do it.