Let's now find out the overclocking limits of the Rampage card by using a trial-error testing procedure. The easiest way to overclock is by using the ATI Overdrive function.

The "Auto tune" function gave us some quick numbers:

What we got from ATI's Auto Tune function is rather limited, since the core was set at 755MHz only, just 5MHz higher than the nominal frequency. The memory was also increased by just 10MHz (960MHz).

We manually set the GPU clock at 800MHz and left the memory clock at 960MHz. The system was stable although we did not see any actual gain in the performance.