GV-N98TGR-512I Powered by NVIDIA GeForce 9800 GT GPU Supports PCI Express 2.0 Microsoft DirectX 10 and OpenGL 2.1 support Integrated with industry’s best 512 MB GDDR3 memory and 256-bit memory interface Supports NVIDIA PureVideo® HD technology Features Dual link DVI-I / D-sub / HDMI with HDCP protection *Minimum 400W or greater system power supply.