Question Safe voltage for polaris?

[NightHawkRMX]

Hello, I have a 480 Nitro+ flashed into a 1366mhz 580. I have to raise the Vcore slightly for it to be stable.

I want to push this GPU past 1400mhz. What is a safe Vcore?

I set the power limit and v core to the max in afterburner, which results in 1.25v. Is this safe?

 

[B7umby]

14nm Polaris has a reasonable voltage tolerance in my experience and opinion, I have personally ran up to 1.5 VCore at 1567mhz on extremely cold water around 5 degrees C, obviously that's in excess and should never really be done unless you hate your card for some reason. 1.25v is perfectly safe for daily use, 1.35v is what I typically run daily when I use my overclock and 1.4v is probably where I would say to limit yourself if benchmarking or having a bit of fun.
The issue with OC'ing Polaris is it's Power Target, at 50% your limited to around 270-280 watts, at 1.3v with a core of 1480-1500 you'll constantly hit the Target pulling the Core Clock down, keep HWinfo open and check the cards power draw when gaming/benchmarking to find the sweet spot where it will hold it's Clock without Clocking down, otherwise you're adding Clock, Voltage and heat of no real advantage nor gain in FPS.
Hope that helps.