How to set up GTL Ref Values for 45nm & 65nm

[CryptiK]

@ xarot - nice work, that may assist the mathematically challenged users work it out. You should not that is the correction factor for the 0.667x GTL, as you leave the 0.635x GTL as is, and only subtract ~40mv from the 0.667x GTL.

Also it should be noted that is only a starting point, and the correct GTL Ref setting really depends on the FSB you are aiming for and the vFSB (aka Vtt) you are using. For example when I use 1.16 vFSB, I have my 0.635x GTL at +50mv and the 0.667x GTL at +10mv, but if I use 1.2 vFSB, I have my 0.635x GTL at -70mv and my 0.667x GTL at -30mv.

I am trying to run at 540MHz+ FSB, I can get it in windows and do everything, but it won't pass 300%+ of memtest.

So are you telling me I could get it super stable if I tweak them, or I could just dump more vfsb and vnb and solve my problems that way. Cause if its just going to give me 400% or 500% stability in memtest, then I am not going to waste my time..

No one can tell you exactly how many % coverage you will pass in memtest. You have to try it and see. However, if you can pass Orthos small FFT and Lipnpack, which are primarily cpu stressors, but fail memtest at ~300%, I'd say you need to increase vdimm slightly, perhaps vNB slightly too. Try that before you go GTL tweaking.

Windows memtest is actually very hard on the ram and NB and I actually needed 2 notches more vdimm to pass it, although I was Linpack & Orthos Large & Small FFT stable.