To overclock the card we used MSI Afterburner as we didn’t want to be limited by the ATI Catalyst Control Center ‘overdrive’ solution.
Our results were incredible as we managed to push the core to 940mhz and the memory to 4400mhz (effective). We retested to check how the Arctic Cooler coped with the massive increases.
When the card was overclocked to 940 core and 4400mhz on the memory the temperatures only rose by 10c under load. The card, even when overclocked to such huge levels was still running cooler than the reference design card at reference clocks.
With these overclocks, we noticed around a 4-5 fps increase in Crysis Warhead which really helped to smooth out some studdering with lower FPS in specific situations.