Diamond 4870X2PE52G ATI Radeon HD 4870X2 PCIE 2GB GDDR5 Dual DVI Video Card 2 GB Memory with dual 256-bit memory interface and GDDR5 memory configuration Support for Microsoft Direct X 10.1 Shader Model 4.1 and OpenGL 2.0 Up to 24X Custom Filter Anti-Aliasing High-speed 128-bit-HDR (High Dynamic Range) rendering Built-in HDMI and 7.1 surround sound