Quote Originally Posted by Shiranui Gen-An View Post
You just have to experiment, really. People are using the usual percentages (0.61%, 0.63% etc).
I did a quick scan of this thread, and found the following sets of info for quads:

Speed VTT CPU Ref Multi NB NB Ref Multi PLL
8x451 1.2v .76v .63x 1.3 .76v .58x 1.5v
8x505 1.34v .83v .619x 1.4 .88v .628x 1.59v
9x500 1.4v .89v .63x 1.6 .90v .562x 1.5v
9x500 1.44v .76v .527x 1.6 .76v .475x 1.65
9x525 1.48v .815v .55x 1.6 .90v .5625x 1.59

That's what I meant when I said not everyone is using the same formula. You have CPU GTLs all the way from .52x to .63x, and NB GTLs from .475x to .628x