Is CPU-Z reporting the right CPU voltage?

I am running 500x8 with 1.36v set in BIOS on my Abit X38, but CPU-Z reports about 1.26v, if my memory serves me.

I think my CPU can run small orthos for a few hours no problems, watercooled, I can't remember how long I left it running TBH. I am not a stress test junkie, if it play all my games etc......

I aways assumed CPU-Z was wrong

Cheers!