I've already tried that... I can barely get an overclock of 4.5 GHz stable with 1.368v on the VCore. The CPU level up for 4.6 in the BIOS only gives 1.35v. I simply just get a 101 BSOD.
Also, that was the only setting you tried and have not messed with anythig else, right? Except maybe enabling XMP for the memory.