Im running 1.27v on a overclock with the 4670k I'm able to get 4.6ghz on 2 cores and 4.5ghz stable on the other two at that voltage, If i try to lock cores at 4.6 I become unstable, my temps are around 64c plus minus 1c per core. Would it be best to drop to 4.5ghz with cores locked, or stay where i'm at? Thanks!