4GB GDDR5 memory - 1500 MHz Memory Clock and 1175 MHz GPU Clock (PCIe x 16) with a 128-bit Memory interface<br />Pci Express 3 0 - 1x16 PCIe 3 0 lane slot available on the motherboard is required<br />Independently powered - bus-powered 75W Max power draw and requires no additional power source (minimum of 350W PC power supply is required)<br />Independent HD Audio - Each DisplayPort provides independent audio sound through DDM Audio (ddma) to each monitor in brilliant 7 1 surround Sound ">