CPU-Z 1.52.1 reported core voltage

[Troezar]

I'm currently overclocking the hardware in my sig. I am at 230x11 with the core voltage @ 1.45v in the BIOS. However Core voltage displayed in CPU-Z is 1.376v most of the time but seems to fluctuate now and then between 1.344 and 1.392.

Anyone any experience of this? I'm not too keen to keep bumping up the volts and apparently all things being equal 1.45v "should" be good for 250x11...

 

[PaulyD]

Thats vdrop in action, the difference between the idle voltage in windows and load is called vdroop (pretty sure they are that way round!)

Googling either of those terms will bring up a wealth of information

 

[Troezar]

Aha!

"The CPU VID setting establishes the absolute maximum allowable processor supply voltage experienced during transient conditions and is not the target idle voltage."

Now I get it, the value of 1.45v set in the BIOS isn't the actual amount the CPU will get but the max it can receive. However it will increase the idle voltage (which I have seen go up since raising above default) hence it being raised to increase stability with overclocks.

Thanks for that, found a good article is anyone else is intereted:

http://www.anandtech.com/cpuchipsets/intel/showdoc.aspx?i=3184&p=5