Mine needs 1.5875v in the BIOS to get stable at 3.8Ghz. But it looks like about 1.56v real once in Windows. Everyone always warns about going above 'xyz' voltage, but some chips just need/like the voltage I guess, mine being one of them. It would be cool to run 1.46v at 3.8Ghz like some here, but mine seems to like to run hard and fast.

Just for reference