PowerColor ATI Radeon HD6750 1 GB DDR5 VGA/DVI/HDMI PCI-Express Video Card AX6750 1GBD5-H GPU: Radeon HD 6750 Core Clock: 700MHz Stream Processors: 720 Stream Processing Units Effective Memory Clock: 1000MHz (4.0Gbps) Memory Size: 1GB Memory Interface: 128-bit Memory Type: GDDR5 3D APIDirectX: DirectX 11 OpenGL: OpenGL 4.1 PortsHDMI: 1 x HDMI D-SUB: 1 x D-SUB DVI: 1 x DVI RAMDAC: 400 MHz Max Resolution: 2560 x 1600 Cooler: With Fan Dual-Link DVI Supported: Yes HDCP Ready: Yes nterface: PCI Express 2.1 x16