The actual circuit board has been upgraded to include 12-phase power supply. With direct control of the tension via ASUS own overclocking utility, GPU Tweak.

Otherwise, the graphics card factory overclocked to 1 GHz core and 1400 MHz on the graphics memory. A lift on 75 MHz and 25 MHz from the reference card. It is worth mentioning that it also supports six monitors, on a card.

Source 1: TechSweden.org
Source 2: Link