Zotac GeForce GTX 780 AMP Edition 3GB GDDR5 PCI Express 3.0 DVI HDMI DisplayPort SLI Ready Graphics Card ZT-70203-10P 2,304 processor cores 384-bit memory bus Engine clock (base): 1006 MHz, (boost): 1059 MHz Memory clock: 6208 MHz DisplayPort 1.2 (4K ready) 2 x DL-DVI VGA (with included adapter) 1 x HDMI Quad simultaneous display capable HDCP compliant SLI bridge connectors (3-way SLI) NVIDIA GeForce driver Microsoft DirectX 11.1 (feature level 11_0 )OpenGL 4.3 Microsoft Windows Vista/7/8 x86/x64 ED 480p HD 720p HD 1080i Full HD 1080p Quad Full HD (4K) NVIDIA GPU Boost 2.0 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-SLI)NVIDIA SHIELD gaming-portable ready 700-watt power supply recommended 265-watt max power consumption