ZOTAC GeForce GTX 560 Ti OC 1GB GDDR5 PCI Express 2.0 Dual DVI/mini HDMI SLI Ready Graphics Card, ZT-50303-10M NVIDIA GeForce GTX 560 Ti GPU, 384 Unified Shaders, 1GB GDDR5, 256-bit memory bus, Core Clock: 850 MHz, DirectX 11, OpenGL 4.1, NVIDIA ForceWare Drivers, Windows XP/Vista/7 NVIDIA Unified Architecture, NVIDIA 3D Vision Surround ready & SLI ready, Dual dual-link DVI (Up to 2560x1600), HDMI 1.4a w/audio, HDCP ready, SLI bridge connector (2-way SLI ready) ED 480p, HD 720p, HD 1080i, Full HD 1080p Shader Clock: 1700 MHz, Memory Clock: 4010 MHz, PCI Express 2.0 NVIDIA PhysX Technology & CUDA Technology, NVIDIA PureVideo HD technology