I have been recently using the computer I built and I notice that when I move some windows the windows trail. I called EVGA and they said it could be because of my PSU or my GPU. I told them my voltage readings on my 12v and they said it was too high. My 12 volt goes from 12.288 to 12.416. Here are my voltages. http://tinypic.com/r/bg1p49/6 I have a hx750 watt gold PSU that my friend gave me. He said it was new and it has warranty. I also have a regular GTX 660 from EVGA.