XFX ATI Radeon HD6670 1 GB DDR5 VGA/DVI/HDMI PCI-Express Video Card HD667XZAF3 Support ATI CrossFireX Technology Support ATI Eyefinity Technology Connectors: VGA, DVI, HDMI Thermal: Fansink Support Microsoft Windows 7 Memory Clock: 4000 MHz Memory Interface: 128-bit Bus: PCI-Express 2.1 x16 Chipset: Radeon HD6670 Engine Clock: 800 MHz Video Memory: 1GB DDR5 Stream Processors: 480 RAMDAC: 400 MHz Max. Resolution: 2560 x 1600 Chipset: Radeon HD6670 Engine Clock: 800 MHz Video Memory: 1GB DDR5 Memory Clock: 4000 MHz Memory Interface: 128-bit Bus: PCI-Express 2.1 x16 Stream Processors: 480 RAMDAC: 400 MHz Max. Resolution: 2560 x 1600 Connectors: VGA, DVI, HDMI Thermal: Fansink Support Microsoft Windows 7 Support ATI CrossFireX Technology Support ATI Eyefinity Technology Support ATI PowerPlay Technology Support AMD HD3D Technology Support AMD Accelerated Parallel Processing (APP) Technology Support HDCP - High-bandwidth Digital Content Protection Support Microsoft DirectX 11, Shader Model 5.0 and OpenGL 4.1