Help requested in OC

MacTavish08

Honorable
Jul 24, 2014
96
1
10,635
So,guys, I made my first PC, and I decided to get the most or at least improve its performance by a bit. I have a G3258 3.2GHz with a MSi H81M-P33 mootherboard. I want to overclock it to 4.2 GHz. What would be the perfect voltage that I can set it at, so it doesnt fry my PC or something ? Thanks