i beleave there's a link in one of the posts here to another forum ware they discussed all about the bios mod, in short i would guess that the mod does up the viltage by 0.1 also that there are several versions of the bios editor and some didnt show things correctly namely some showed the bios to be set at 1.4 but was at 1.5, i cant remember it all but if interested have a look and if i find the link i'll post it back.