We are using the latest version of Sapphire’s TriXX tool for overclocking today. This has proven to work great with all AMD discrete graphics hardware.
An impressive overclock to 1,138mhz from the core which translates to around 26 percent. We managed to push the GDDR5 memory to 1504mhz, from 1375mhz.
The results are quite staggering, as when we push the XFX HD7950 Black Edition to the redline, it manages to outperform the reference clocked HD7970, by a clear margin. Almost 8,800 points in 3DMark 11 is also only around 500 points less than the GTX590!