I have an EVGA gtx 670 ftw, a 750w corsair PSU, and standard air cooling. How should I use EVGA precision X to overclock my GPU, and choose when the GPU increases it's performance? (sometimes I don't think it's clocked as fast as I want it to be when I'm using it)
Increase the power limit to maximum in order to get a higher boost clock. Increase the GPU about 10-20 Mhz at a time while leaving the memory at default and stress test with furmark and 3d mark 11 to see if its stable. If it is, increase it another 10-20 Mhz and repeat until you got a crash/blue screen, then you go back to the previous GPU clock that is stable. Once you are done with GPU, repeat with memory, increase about 50 Mhz at a time and run furmark and 3d mark 11 to see if its stable, keep on increasing till it crashes and/or blue screen, then you know the maximum stable memory frequency.