Bios 16B04 and 16B03 are both off on vcore and cpu vtt with my E8400. With 1.35v selected in bios uguru shows 1.25v, DMM shows 1.28v. I get about .1v less shown by uguru than what I select in bios. Cpu vtt seems to be the same way so the current bios for this board does not properly support Wolfdale overclocking.