The SAPPHIRE HD 7990 has a dual GPU architecture with a total of 4096 Stream processors and core clock speeds of 1GHz (with Boost enabled), delivering up to 8.2 TeraFlops of compute power. It is equipped with 6GB of the latest DDR5 memory, and its output configuration of Dual-Link DVI plus four DisplayPorts supports up to 5 simultaneous displays in AMD Eyefinity. A large heatpipe assembly cooled by three axial fans ensures that the card runs quietly even under load. model : Sapphire HD 7990 6GB DDR5 PCIE tag : Video - Graphic Cards