Yes I think you're right The Game, but I did read that some people could only boot with 220 and push all the way up to 235 or even 240 in Windows...
I wouldn't mind bumping it up in Windows since I don't need to run more than 220 BCLK anyway for 24/7, just for benching now and then, but since it hangs at 221 I'm not happy yet about it...
I don't think watercooling the NB would help a lot here, right?