AMD launched the World's first 40nm graphics card this week and many are wondering how well the ATI Radeon HD 4770 video card overclocks. Read on to see how this $99 graphics card does when pushed to the limits with RivaTuner v2.24 and benchmarked with the new highest stable clock frequencies.

The ATI Radeon HD 4770 512MB video card is no slouch when it comes to overclocking performance, but the trick is that you will need to use RivaTuner in order to get great overclocks as Catalyst Control Center really limits how high you can reach. The 931MHz overclock that we were able to reach was only stable for 3DMark Vantage overclocking, but the 915MHz clock frequency was 100% stable for all games and benchmarks. We are happy with the overclock as 915MHz/1000MHz sure sounds and performs better than the default clocks of 750MHz/800MHz. The only thing really holding back the ATI Radeon HD 4770 is the number of stream processors and texture units...