Model name HD7770-DC-1GD5 Positioning Performance Bus Standard PCI Express 3.0 Selling Points. 20% Cooler with exclusive DirectCU thermal solution. 1020 MHz Overclock for better performance and outstanding gaming experience. GPU Tweak utility allows you to tune graphics card performance and check card status via an intuitive interface. New PCI Express 3.0 delivers improved encoding and twice the performance of PCI Express 2.0. Expand your visual horizons across six displays with AMD Eyefinity technology *To enable 6 monitors, DP 1.2 compatible monitors are required.