Technical Specifications Package Type:Retail Chipset:AMD Radeon HD 6770 Interface:PCI Express 2.1 Video Memory:1GB Memory Type:GDDR5 Engine Clock:850MHz Memory Clock:4000MHz (1000MHz GDDR5) Memory Interface:128-bit Stream Processing Units:800 RAMDACs:400MHz Max. Resolution:2560x1600 Connectors Interface D-Sub Output : Yes x 1 DVI Output : Yes x 1 , Yes x 1 (via HDMI to DVI adaptor x 1) HDMI Output : Yes x 1 HDCP Support : Yes System Requirements - PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard. - 450 Watt Power Supply is required.