I am using cap ayam PSU and my vcore in cpuz fluctuates from 1.296 to 1.328. This is because of the cap ayam right?

If I use something like Acbel psu, would it still fluctuate? Anyway I have tried to oc it, I can get 2.8 (priming since early evening today) stable with coretemp showing below 45C. To get 3 gig I need to add vcore +0.5 to boot into windows. I'm planning to get a silent cooler master PSU and cooler master hyper TX.

I really don't want to add vcore cause my purpose of upgrading to 65W was to get the savings when running 24/7. If I just OC without adding vcore the power consumption still max at 65W right? Anyone test this before?