Zotac GeForce GTX680 AMP 2GB GDDR5 PCI Express 3.0 HDMI DVI-I DVI-D DisplayPort Dual SLI Ready Graphic Card, ZT-60102-10P NVIDIA GeForce GTX 680 GPU, 1536 processor cores, 2GB GDDR5, 256-bit memory bus, Engine Clock (base): 1100MHz (boost): 1175MHz, Memory clock: 6600MHz, PCI Express 3.0 (compatible with 1.1) NVIDIA GPU Boost technology, NVIDIA Adaptive Vertical Sync Technology, NVIDIA SMX shader architecture, NVIDIA PhysX technology, NVIDIA CUDA technology, NVIDIA 3D Vision Surround support, NVIDIA SLI ready (3-way) NVIDIA GeForce driver, Microsoft DirectX 11, OpenGL 4.2, Microsoft Windows XP/Vista/7 x86/x64 Display Port 1.2 (4K ready), HDMI 1.4a (4K ready, w/audio), DVI-I (VGA with included adapter), DVI-D (digital only), Quad simultaneous display capable, HDCP compliant, Dual SLI bridge connectors (2-way) ED 480p, HD 720p, HD1080i, Full HD 1080p, Quad Full HD (4K) 600-wat power supply recommended, 210-watt max power consumption