@nanohead: I had problems running at x15 multi too in order to get it to boot stable I needed almost .5v more for a total of 1.44v (still testing ~19h running BOINC) when at x14.5 multi I only needed 1.39 for it to be stable (~28h running BOINC).

Anything higher than x15 multi is a no go though tested until 1.525v in BIOS and it would boot until the windows orb and then BSOD.

I think that i'll try some HTT overclocking a little later just want to "break-in" my phenom right now.