DESC: GIGABYTE HD Experience Series1.Powered by NVIDIA GeForce GT 440 GPU 2.Supports PCI Express 2.0 3.Microsoft DirectX 11 and OpenGL 4.0 support 4.Integrated with industry's best 1 GB DDR3 memory and 128-bit memory interface 5.Supports NVIDIA PureVideo HD technology 6.Features Dual link DVI-I/ D-SUB/HDMI with HDCP protection OpenGL 4.0 Optimizations Ensure top-notch compatibility and performance for all OpenGL 4.0 application. Microsoft DirectX 11 World's first DirectX 11 GPU with full Shader Model 4.0 support delivers unparalleled levels of graphics realims and film-quality effects.