3.6125 is stable for me, with a Vcore of 1.335 (bios), 1.32 (CPU-Z) and a FSB voltage of 1.3 (eVGA 780i FTW board). I can probably lower the vcore a bit more and achieve the same stability. Just need to find the time to set, reboot, test, set, reboot, test .... bah.
I was able to get 3.7 by...