XFX ATI Radeon HD6950 2 GB DDR5 2DVI/HDMI/2x Mini-Displayport PCI-Express Video Card HD695XCDFC Support Microsoft Windows 7 Support ATI CrossFireX Technology Connectors: Dual DVI, HDMI, Dual Mini-Displayport Thermal: Fansink(Dual PWM Fan) Memory Clock: 5000 MHz Memory Interface: 256-bit Bus: PCI-Express 2.1 x16 Chipset: Radeon HD6950 Engine Clock: 800 MHz Video Memory: 2GB DDR5 Stream Processors: 1408 RAMDAC: 400 MHz Max. Resolution: 2560 x 1600 Chipset: Radeon HD6950 Engine Clock: 800 MHz Video Memory: 2GB DDR5 Memory Clock: 5000 MHz Memory Interface: 256-bit Bus: PCI-Express 2.1 x16 Stream Processors: 1408 RAMDAC: 400 MHz Max. Resolution: 2560 x 1600 Connectors: Dual DVI, HDMI, Dual Mini-Displayport Thermal: Fansink(Dual PWM Fan) Support Microsoft Windows 7 Support ATI CrossFireX Technology Support ATI PowerPlay Technology Support ATI Eyefinity Technology Support AMD HD3D Technology Support AMD Accelerated Parallel Processing (APP) Technology Support Microsoft DirectX 11, Shader Model 5.0 and OpenGL 3.2 550 Watt Minimum Power Supply Requirement