E6750 @ stock running at 1.408v even with Intel Speedstep enabled, Why so high!

[naz]

I'm using an Asus P5B motherboard and recently overclocked the cpu to
3.2 Ghz. Then bougt an Asus 8800gt, but before installing the card, I set the
cpu back to its default speed and noticed the volts were higher than when
overclocked. I had initially disabled Intel Speedstep when the cpu was overclocked. Re-enabled it and even at 6 x multiplyer running at 2Ghz its still
running at 1.408 volts thats obviously way too high. Using CPU-Z to read the
temps, it seems to be working fine showing the temprature changes each time I make adjustments to the cpu.

Anyone have any ideas as to why the board won't change the volts down as
I've reduced the clock speed. I'm using the 1604 bios for my board and 169.02
drivers for my GFX card.

 

[naz]

Right, I had a look in the bios and everything was set to auto. God knows why
the voltage would go up to 1.4 volts for 2ghz. I manually set the new value to
1.2875 volts and left it at that. Seems to have fixed it for now.

 

[muon]

The auto system assumes that the voltage must rise with the overclock. So if the stock voltage is 1.325 and you overclock to 3.2ghz, it increases voltage so that the system remains stable.

I'd hazard a guess that it follows the voltage range shown here

http://processorfinder.intel.com/details.aspx?sSpec=SLA9V