ASUS GTX 660 Ti Series Graphics Cards TI-DC2T-2GD5 1137 MHz Overclock for better performance and outstanding gaming experience 20% cooler and Vastly quieter performance with ASUS exclusive DirectCU II thermal solution ASUS DIGI+ VRM technology with 6phase Super Alloy Power for precise digital delivery and enhanced overclocked headroom. (compared to 4phase in reference card) GPU Tweak utility allows you to tune graphics card performance and check card status via an intuitive.