Voltages for overclocking i5 4670k

[whatofit]

Hey

I over clocked my chip yesterday at just 4.2ghz @ 1.135v and 53-56c on all 4 cores, I ran occt for couple hours it's running stable.

Was wondering are these safe voltages? So far my temps seem pretty safe, also what is the max voltage that this chip should be pushed to? In order to get a better overclock?

Thankyou!

 

[ssix]

What cooler you got?? I got very similar results with a h60 and 1.155v was getting about 50-53

 

[whatofit]

Ive got the thermaltake water pro 2.0