ZOTAC GeForce GT 520 1GB DDR3 PCI-Express 2.0 HDMI DVI VGA Graphics Card ZT-50603-10L NVIDIA GeForce GT 520 GPU, 48 Unified Shaders, 64-bit memory bus, Core Clock: 810 MHz, Shader Clock: 1620 MHz, Memory Clock: 1333 MHz NVIDIA Unified Architecture, NVIDIA PhysX Technology, NVIDIA CUDA Technology, NVIDIA PureVideo HD technology, HDMI xvYCC Color & DeepColor technologies, Dolby True HD & DTS-HD Master Audio bitstream support NVIDIA ForceWare Drivers, Microsoft DirectX 11, OpenGL 4.1, Microsoft Windows XP/Vista/7 Dual-link DVI (Up to 2560x1600), HDMI 1.4a w/audio (8-channel LPCM & bitstream), VGA, HDCP ready ED 480p, HD 720p, HD 1080i, Full HD 1080p 300-watt power supply recommended, 29-watt max power consumption