Quote Originally Posted by Hoss331 View Post
None of my chips have really responded to extra vtt. For that run I was using 1.26vtt and 1.28nb, for 4.3+ (480s fsb) I use 1.28vtt and 1.30nb, 490+ 1.30vtt.

Ive read the same on the q9650 you should never need more than 1.24 to 1.30
to push past 4.0 except on some older boards like my DFI UT P35-T2R which where really designed for the dual cores 65m and 45m and really only designed to push the q6600 on a high vtt because of the boards high vtt requirements towards high fsb


VTT = 1.2V - 1.3V = Up to 400 FSB

VTT= 1.4V - 1.55V = 420-440FSB

VTT=1.6V = 440-475FSB