GTL Ref Tweaking Guide

[cadaveca]

Negev,

vcore 1.325
vtt 1.2
PLL 1.509
SB 1.50
NB 1.50

but this is with QX9650/Q9650, and maybe because q9450 has less cache, maybe FSB of cache is neutered on your chip.

10,5,10,10 cpu GTL has never worked for me. Sure, it can create a bootable situation, but never stability. But I always keep VTT low...

you should not need to tweak GTL or VTT, IMHO, until over 1.3625v cpu. each step above is going to require miniscule adjustments, and this can be offset by adjsuting other voltages to fall in line with cpu volts.

Also, more than 1.6v NB is going to cause issues. You should NOT need that much @ 425FSB...more like 1.4v...I can even run 450fsb dual, 4x1, @ 1.375v bios.

GTL 0 and 1 should be different dies in quad, AFAIK. when I say core, I mean piece of silicon, not cpu.