Originally Posted by PhotonFanatic
Thanks! And now, more questions! If that's conservative on the voltage, what's the highest I should ever go? I get different places telling me different numbers. Some on this site have gone to 1.3v. Others say 1.2v is fine. A google search revealed that ASUS says not to go above 1200mv or 1.2v. And are we talking about idle, or what voltage its running at when I'm running furmark? Or is the voltage constant no matter what you're doing?
Also, I can remember back in the day in 2008, there was some dissatisfaction with how accurate temp monitors were, like Coretemp. That's been a long time ago, so I have no idea if that's true anymore. Is it still a problem? Is there a program that you would recommend that is known for its accuracy when it comes to GPU temps? Or has that been proven wrong, or overcome by now?
Furmark says my temp gets up to 79c on the burn in test. Would that indicate that I shouldn't increase the voltage at all? If in fact, 80c is the limit of this card. It seems that I'm quite heat limited here. If I increase the voltage and the clocks, the card is only going to get hotter.
Hmm, maybe I read the max voltage wrong... I know how to overclock a 7950, but not a 770!
IDK what a "safe" max voltage for a 770 is. I though all 770s (except the MSI Lightning and your EVGA Classified) had a hard limit, but I must've been confused... You should look through other threads, and know that your 770's VRMs (but not necessarily the core) can handle whatever voltage you set.
As for temps... I touched on it before, but the AMD R9 290 actually runs at 95C under load by design, and it's manufactured the same way your 770 is. 90C max in furmark sounds like a reasonable limit, as that translates to ~80C or less in actual games. Using MSI afterburner, you can change the fan curve so that the fans ramp up more aggressively, bringing temps down.
Programs can be inaccurate because they have to know what temperature sensor to look at. I recommend MSI Afterburner (because it's very popular/frequently updated) and HWInfo64 (because it just lists ALL the sensors it can find