Use MSI Afterburner: http://event.msi.com/vga/afterburner/index.htm To do the overclocking. Then once you have raised the clock speed and memory speed by maybe 15MHz, run a program like 3DMark 11 to test to see if it's stable. Basically, if there are no artifacts and it doesn't crash, you are good to go. Continue to raise the clock speed and memory speed until 3DMark crashes. Once that happens, all you have to do is raise the Voltage multiplier (You can unlock the multiplier in the settings of afterburner) by 15Mv or so until the crashing stops. eventually you will reach the point where raising the voltage doesn't prevent a crash. At this point, keep the voltage you have set when it crashes, and lower both the memory and clock speed by 10-15 MHz, then boom. Overclock successful. Note* Shader clock is automatically adjusted to the speed of the core clock.