TUL Corporation, a leading manufacturer of AMD graphic cards, today announced powerful equipment for enthusiasts: the PowerColor HD7990. Powered by dual Tahiti XT GPUs, PowerColor HD7990 easily boosts up performance with dual BIOS switch button embedded on bracket, by 900 MHz default engines clock and 925 MHz OC engines clock, delivering the ultimate gaming efforts which easily tackles demanding games titles. Key to Ultimate Gaming PowerColor HD7990 has equipped with trio slots and trio fans cooling solution, thermal design power capability up to 550 watts, maximizing the heat dissipated ability to cool down the dual GPUs board. Furthermore, it's built with multi phases design, UHB, digital PWM and PowerIRstage, increases steady of voltage power for GPU, stabilizes the gaming performance even at load. Superb Combo PowerColor HD7990 packs with PowerColor PowerJack. This professional graphics card supporter provides the powerful force to support the weight of the card from the back, avoiding card bending in the case. With its multistage extension function and exchangeable supporter body, it can extend up to 235 mm and it's applicable in each kind of chassis.