ASUS published more details about its upcoming ROG STRIX RX 480 video card, you can check it out over here. This model is expected to be available within about 4 weeks from now.
The GPU (grahics processing unit) comes factory-overclocked to 1330MHz in OC mode with headroom for further tweaking (1310MHz boost clock in gaming mode) and is paired with 8GB of GDDR5 video memory operating at 8GHz on the 256-bit memory bus. This translates to a performance boost of 15% in 3DMark Fire Strike and 19% in the latest games such as DOOM and Hitman compared to reference, that's quite a boost! In comparison, the reference card runs at 1266MHz (Boost clock) and 1120MHz (base clock).