Stefan Mileschin

The PowerColor HD 7790 Turbo Duo video card uses a custom single-heatpipe copper heatsink design with a pair of silent 80mm fans for active cooling. The HD 7790 Turbo Duo from PowerColor also comes out of the box with a factory overclock of 1075MHz, compared to the 1000MHz boost clock of the reference Radeon HD 7790. For display output, the PowerColor HD 7790 is equipped with two DVI ports, a full-sized HDMI port and a full-size DisplayPort with full AMD Eyefinity support for 3 or more displays. Through the AMD Catalyst Control Center, or through a future update to PowerColor's own Power Tuner Up utility, users can overclock the HD 7790 for better performance under the latest DirectX11 games. For even further performance increase, the PowerColor HD 7790 Turbo Duo can be Crossfired with another HD 7790 allowing it to outperform more expensive and higher end video cards.

http://www.hitechlegion.com/reviews/...4481-pc-7990td