Zotac AMP! 810MHz/4000MHz GeForce GTX 460 1GB 256-bit Graphic Card ZT-40403-10P NVIDIA GeForce GTX 460 GPU, 336 Unified Shaders, 1GB GDDR5, 256-bit memory bus, Core Clock: 810 MHz, Shader Clock: 1620 MHz, Memory Clock: 4000 MHz, PCI Express 2.0 (compatible with 1.1) NVIDIA ForceWare Drivers, Microsoft DirectX 11, OpenGL 4.0, Microsoft Windows XP/Vista/7 NVIDIA Unified Architecture, NVIDIA 3D Vision Surround ready, NVIDIA PhysX Technology, NVIDIA CUDA Technology, NVIDIA SLI ready, NVIDIA PureVideo HD technology, HDMI xvYCC Color & DeepColor technologies Dual dual-link DVI (Up to 2560x1600), HDMI 1.3a w/audio (8-channel LPCM & bitstream), DisplayPort, HDCP ready, SLI bridge connector (2-way SLI ready) ED 480p, HD 720p, HD 1080i, Full HD 1080p