The Sapphire Radeon HD 7790 OC edition is one of the latest GPUs based on AMD’s 28nm Graphics Core Next (GCN) architecture and uses the Bonaire GPU. The Sapphire 7790 features their custom dual-x cooling solution. The custom cooler is designed with two fans and multiple heat pipes to keep the card cool during intensive use. The GPU clock speed is factory overclocked to 1075 MHz from the standard 1GHz reference speeds. The 7790 also features AMD's newest version of their PowerTune technology, which is designed to be more power efficient and allow for higher clocks. The memory on the card is one GB of GDDR5 and features a 128-bit bus, with a memory clock speed of 6000 MHz.