Originally Posted by Detroitsoldier
For only 4.0GHz on a custom loop, I'd say that's too high for load and even at idle.
1.34v seems like quite a bit for 4.0GHz. Is that the lowest you achieved while stable? Seems like it could go a lot lower... I hit 3.8GHz stable at less than 1.2v, but you may have hit a wall, I guess.