PowerColor ATI Radeon HD5770 PCS+ 1GB DDR5 2DVI/HDMI/DisplayPort PCI-Express Video Card (V2) AX5770 1GBD5-PPGV2 Chipset: Radeon HD5770 Engine Clock: 875 MHz Video Memory: 1GB DDR5 Memory Clock: 1225MHz x4 (4.9 Gbps) Memory Interface: 128-bit Bus: PCI-Express 2.1 x16 Stream Processing: 800 Max. Resolution: 2560 x 1600 Connectors: Dual DVI; HDMI; DisplayPort Thermal: Fansink Support Microsoft Windows 7/Vista/XP Support ATI CrossFireX Technology Support ATI Stream Technology Chipset: Radeon HD5770 Engine Clock: 875 MHz Video Memory: 1GB DDR5 Memory Clock: 1225MHz x4 (4.9 Gbps) Memory Interface: 128-bit Bus: PCI-Express 2.1 x16 Stream Processing: 800 Max. Resolution: 2560 x 1600 Connectors: Dual DVI; HDMI; DisplayPort Thermal: Fansink Support Microsoft Windows 7/Vista/XP Support ATI CrossFireX Technology Support ATI Stream Technology Support ATI Eyefinity Technology Support ATI PowerPlay Technology Support ATI Avivo HD Video & Display technology Support HDCP - High-bandwidth Digital Content Protection Support Microsoft DirectX 11, Shader Model 5.0 and OpenGL 3.2 450W Minimum System Power requirement w/1x 6-Pin PCI Express Power Connector