The SAPPHIRE HD 7790 OC Edition is the first product in a new family featuring the latest GPU architecture from AMD. It has 1GB of the latest DDR5 memory, and is factory overclocked with core clocks of 1075MHz and memory clocks of 1600MHz (6.4GB/s effective) to deliver new levels of performance in its price segment.  Performance is optimised with the latest version of AMD’s PowerTune technology. Quiet and cool operation is assured with SAPPHIRE’s Dual-X cooler design, which combines a multiple heatpipe array with two aerofoil section fans and dust repelling bearings resulting in a highly efficient and reliable cooler.