Voltage is a little high, and makes me suspect you could eke out a little more performance, but that's certainly a safe overclock. I'm surprised the H100i can keep it at those temperatures - that's under load, yes?
Yes used the intel burn test and prime 95 I tried pushing 4.8 but the voltage to keep it stable is pretty high 1.38v for me heat was like 88 degrees and that was only 30mins aswell, too scary for me since I'm new to overclocking but thx for the feedback anything you might suggest to change in my settings?