Okay.. playing around with some prime95. Small FFTs and blend tests.
Re-enforced a theory I had. I see posted all over that you need to increase CPU-NB speed to increase stability at higher OCes. This does not seem to be the case. What is important is that you maintain a +50% clockspeed over your RAM. Could not run blend at 4200/2000/2000/1600 7-7-7 but when I dropped to 1333 7-7-7 its as happy as a little girl.
Going to start walking up the HT REF a bit now... and see if I can pull some blend testing at 4.4
More importantly, with this I hope to be breaking that 4.63 GHz CPUz screenie earlier and maybe even push the benches up to 4.6 GHz