I OC'd my 270X to 1260Mhz on the core and didn't touch the memory clock and I also overclocked my FX-8320 to 4.1Ghz and my resolution is 1366x768. The problem is that whenever I look at MSI afterburner while playing games the GPU usage is floating at around 95-99% and it has never hit 100% even before I OC'd them. (Also both overclocks are stable)