I did a vmod to 1.675v, only then I finally got my TUSL2-Crap to change the vcore voltage on my cel 1.2G. Too bad the cpu is only stable at 1.8v. But it's really stable, loop 3DMark2001 10 times and no crashes, played counter-strike for hours no crashes, wolfenstein, etc....
Before the vmod, no matter what I do the mobo woul ignore the vcore setting. Flashed to the latest official and beta bios. nada. The vcore setting did showed up but only 1.7v, 1.75v, and 1.8v were available.