Nope, doesn't do it at all when it's not overclocked, works perfectly. Yes, it's like a chequerboard, spot on. I forgot to say - it was doing that at 430 / 380 GPU /
RAM. Works ok on the speed in my siggy though. Think I should be happy enough with it?
Sorry to ask two questions at once, but how about the CAS latency, I thought that these Corsair sticks would happily run at at least 2.5 CAS at the speed i'm running them at?