PowerColor ATI Radeon HD5670 512 MB DDR5 VGA/DVI/HDMI PCI-Express Video Card AX5670 512MD5-H Chipset: Radeon HD5670; Engine Clock: 775 MHz Video Memory: 512MB DDR5; Memory Clock: 4 GHz; Memory Interface: 128-bit Bus: PCI-Express 2.1 x16; RAMDAC: 400 MHz Stream Processing Units: 400 ; Max. Resolution: 2560 x 1600 ; Connectors: VGA; DVI; HDMI; Thermal: Fansink Support ATI CrossFireX Technology; Support ATI PowerPlay Technology; Support ATI Avivo HD Video & Display Technology; Support Microsoft DirectX 11, Shader Model 5.0 and OpenGL 3.2