Today we used Catalyst Control Center for the overclocking results.
Due to Catalyst Control Center limitations we are limited to 1050 mhz on the core and 1,450mhz on the memory. We are confident that additional headroom is available.
The manual overclocking enhancements translate to a 300 points increase, to around 6,300 points. This is only 200 points less than a GTX580, which is fantastic considering the price point.