I7 4790k @ 4.9ghz 1.35v

[culzone]

Is 1.35v safe for 18 hours per day
My chip is delidded and Im using a kraken x61 and im under 80C during prime 95 v26.6

It shows 1.35v in CPU-Z and that is what I put in bios aswell.
However HWmonitor shows 1.38v during stress test is this normal?

 

[KeelinTy]

Thats a pretty good overclock. The voltage is high but not bad for 4.9ghz. I ran my 5ghz chip at 1.45v which I regret because of electron migration. Now my chip isnt stable at 4.7 with 1.35v. I have to run at 4.4 with 1.21v just to stay stable.
But that overclock is pretty good. Since its running for 18 hours a day, I would drop it down to 4.8 or 4.7 to keep the voltage under 1.31v for more longevity

 

[culzone]

Thats a pretty good overclock. The voltage is high but not bad for 4.9ghz. I ran my 5ghz chip at 1.45v which I regret because of electron migration. Now my chip isnt stable at 4.7 with 1.35v. I have to run at 4.4 with 1.21v just to stay stable.
But that overclock is pretty good. Since its running for 18 hours a day, I would drop it down to 4.8 or 4.7 to keep the voltage under 1.31v for more longevity

I actually needed 1.375v for it to be completely stable @ 4.9ghz. 4.8ghz needs 1.332v and im not sure about how low 4.7 could go in voltage. For how long did you run your chip at 1.45v?
EDIT: 1.24v 4.7ghz stable 58C 100% load in prime95 small ffts v26.6
I think im gonna go for the 4.8ghz 1.332v since I have so good temps, btw only 1.332v @ high load. My bios voltage is 1.305

 

[KeelinTy]

That sounds good.I had my chip at 1.45v for about 6 days before it needed more voltage. And then at 4.9ghz it lasted 3 days before needing more voltage.