cpu voltage question

Ok so here is my question.....

Im overclocking atm and im sure i got most of things down....i first used the multiplier to make my phenom iix4 to 4ghz

Witch was ok...but im using the fsb to overclock now to boost ram and nb and ht

I have a slight problem i know its normal for voltages to drop while cpu is under load

But mine is dif

For example my volts while idle were 1.404v then under stress its 1.392v....however i need to increase voltages to help with stability and when i did my volts when idle when from 1.404v to 1.416v then under load they went back down to 3.92v.....im assuming thats why im not stable during stress testing?...anyone nnow if this is normal?...how can i change it/stop it

I have cool n quiet diaabled and c1e and svm ae also disabled

Specks M5A97 Evo by asus

Asus hd7950

8gb patriot g2 series ram

Ocz 700w psu

Phenom ii x4 975