Overclocking and Artifacts

[DrewBallz]

Hello all,

 

While overclocking my EVGA GTX780 Classified I was able to hit a OC of 1350 core/ 7000 memory, without much problem at all. At these clocks I was running around ~68C under full load so I decided to see how far I could push it. I was able to get my core up to 1475 without crashes or freezes. This was with a voltage of 1.3v and a temp of about ~76C. The issue I had was at these speeds I noticed some artifacts in the Heaven 4 benchmark(what I was using to test stability). Now I understand artifacts mean instability, does that mean that if I turn up the Voltage it would become more stable and get rid of the artifacts? Obviously at 76C I have at least 10-15C on the temps to work with(I want to keep it under 90c). My question is will increasing the voltage help? Or is there anything else you can do to help with artifact except turn the core clock down? Also to be noted I did my core clock test with my memory clock set to default then I adjust it after I get a stable core clock, could that huge dif between the two cause an issue?

 

[M-ursu]

You have reached the max OC, try to lower your Mem. clock, that could help.

[DrewBallz]

You have reached the max OC, try to lower your Mem. clock, that could help.

That is what I assumed and did. I am running a comfortable at 1350/7000. I was just hoping maybe there was a way to get it stable at the 1475 clock haha. Thanks for re-affirming my suspicion. 

[Leonius]

If you start to see artifacts you simply reached the maximum cloock of your gpu turn the speed down until they start disappearing... The artifacs come from the chip just being overwelmed, it makes mistakes under such high voltages and speeds and the operations are not clean any more...