Hello every one.
Recently I bought a second 680 for my system. Them both are from Gainward, but the new one have a different cooler style(Phantom). My old one was just a regular "blower style" cooler(I have a custom cooler on this one). I know that just the GPU has to be the same, for sli, but just wanted to address that. I have a 750W bronze psu, so that should be no problem. When I have sli activated they roll just fine, and give me okay FPS, about 60 at Assassins Creed 4.
When I start overclocking them, they just crashes. They only chrash when the stress gets too high (Benchmark, AC4 etc.). I have tried to just oc one at the time, but that doesn't matter. I also have tried to just use one of them. Then there is no problem.
May this be that my psu is to week? I might reinstall windows 8.1 to see if that makes any difference, but that is the last thing I want to do.
One more thing. The one I had from earlier, I was able to set power target to 176%. But the new one just goes to 150%. I know that they don't need to be at same clock speed, and will not be.