Overclocking with speedstep + variable voltage

[DeadMan3000]

I have a E7600 on a Asus P5Q Deluxe and am trying to get a working overclock I am happy with. Right now I have it at 3.846Ghz @ a fixed CPU voltage of 1.328v which appears to be stable. However I want to have speedstepping and a variable voltage. The problem with this is that if I leave the voltage on auto it stays around 1.36v no matter what and the multiplier stays at the 2Ghz mark (with or without fixed voltage).

I was wondering if I can get stepping to go from 1.6Ghz -3.846Ghz under load and a voltage variable from 1.272v (Preferably lower. I will need to experiment with undervolting to find out) - whatever it needs to get to the 3.846Ghz mark. Or is this just not possible?

 

[happy medium]

However I want to have speedstepping and a variable voltage

I don't think our board has variable voltage. I have not found the option as of yet.

 

[DeadMan3000]

From Googling around it appears you are correct. Same goes for the multiplier? I.E. By setting the FSB at 333 it clocks up the Ghz when stepped down too. Not an issue really but I would have liked to be able to use a lower voltage when it is idling.

As a side note does anyone know if any of the new Sandybridge boards offer variable voltage and/or multiplier 'ranges' (like having default lowest speedstep but boosting the multiplier on an overclock?).