Fine Tuning my Overclock

[EpIcPoNaGe]

Hey everyone! So I've decided to give a shot at fine tuning the overclock on my Asus 780 ti Direct CU II for games. So currently I know it'll run at 1150Mhz Core and 1800Mhz Mem at 1187mV. It is the "I don't have time to be messing with overclocks right now" conservative overclock that I put on it whenever I play games. I know I have to just keep running benchmarks like Valley or Firestrike and increase the clocks in increments of like 10 or 15 Mhz, but I was wondering if there is anything else I should be paying attention to or tweaking? I want to now try to get every last fps out of this card when gaming and so I'd like some help fine tuning my overclock.

I have hit 1301Mhz core and 1879Mhz mem when benchmarking before, but I remember it was starting to artifact and after one run it refused to run at anything close to it. I'm guessing its because my card would randomly drop voltage. Is my voltage tied to the temps I'm getting? With stock bios, I'm unable to tweak my voltages at all. I have tried running skynet bios on my card to try an overvolt, but it got really unstable and so I'm just going to stay away from modded bios...