why does everyone's PSU undervolt.. except mine

I see lots of people saying that they oc they processor and their 12v line starts to fall. But mine.. when I overclock my cpu and raise the vcore, my 12v line rises each time I move up a step. wierd.. does it mean my power supply is too powerful? lol

at 2.2ghz 1.6vcore my 12v line was 12.49 already. Then If I go higher my comp randomly restarts. my PSU is 15A on 12v line also..


another question: if I wanted good 12v power, there's no difference between a fortron 300, 350 and 400 right? cause they're all 15A@12v.

thanks.