-
See all that BS info in the Calc !, it is not even needed as it only confuses most peeps.
Example Quoted from elsewhere but far simpler than this sites :
FSB Termination: 1.35v
Formula:
Vtt x 0.667 + Item = Vtt x 0.635
1.35v x 0.667 + Item = 1.35v x 0.635
0.90045v + Item = 0.85725v
Item = 0.85725 – 0.90045
Item = - 0.0432v
Item= -43mv
Now round up to the nearest selectable value in the bios is -40mv and set the 0.667x Item value
to -40mv (negative), usually the (1 &3) core.
You have now made the 0.667x GTL voltages as close as possible to the 0.635x GTL voltages.
Bios setting Example:
CPU GTL REFERENCE (0) Auto
CPU GTL REFERENCE (1) -40mv
CPU GTL REFERENCE (2) Auto
CPU GTL REFERENCE (3) -40mv
Notice:
If the negative value is unstable then you might have to try the positive value and you also have to
tweaking it by trial and error until you find the stable value for your processor.
Now my way without Algebra crap.
Example :
FSB Term Voltage (VTT) = 1.2v
1) 1.2v x 0.667 = 0.8004
2) 1.2v x 0.635 = 0.762
3) 0.8004 - 0.762 = 0.0384 or 0.762 - 0.8004 = -0.0384
4) GTL's are +/- 0.38v so closest in our Bios is +0.40 or -0.35 or -0.40v (Neg are in 0.50v Steps, Pos are 0.10v in steps).
Last edited by humeyboy; 08-28-2009 at 07:36 PM.
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