So I was running 3D Fire Strike benchmark and I noticed that my clock speed was only at 640 MHz 30% under load and this was (I think) resulting in lower frame rate (25-35 fps on something that I could easily get 90 fps). I know that there is a way to force the oc using Precision X, but I have a AMD card. Any other way to do this? Btw I use Afterburner to oc