Diamond Multimedia AMD R9 290 PCIE GDDR5 4GB Memory Graphics Video Card R9290D54G PCI Express based PC is required with one X16 lane graphics slot available on the motherboard 750W (or greater) power supply with two 150W 8-pin PCI Express power connectors recommended 1000W (or greater) power supply with four 150W 8-pin PCI Express power connectors recommended for AMD CrossFire technology in dual mode The operation of AMD CrossFire technology in dual mode requires a second AMD Radeon R9 280X graphics card and an AMD CrossFire Ready motherboard Minimum 4GB of system memory 8GB (or more) system memory recommended for AMD CrossFire technology Installation software requires CD-ROM drive DVD playback requires DVD drive