NVIDIA Quadro 400 by PNY 512MB DDR3 PCI Express Gen 2 x16 DVI-I DL and DisplayPort OpenGL, DirectX, and CUDA Profesional Graphics Board, VCQ400-PB Chipset: Quadro 400 Video Memory: 512MB DDR3 Memory Interface: 64-bit Bus: PCI-Express 2.0 x16 RAMDAC: 400 MHz Stream Processors units: 48 Memory Bandwidth: 12.3 GB/s Max. Resolution: 2560 x 1600 Connectors: DVI, DisplayPort Thermal: Fansink Support Microsoft Windows XP SP3/ Vista/ 7/ Linux/ Solaris Support nVidia CUDA Architecture Support nVidia 3D Vision Technology Support Microsoft DirectX 10.1, Shader Model 4.1 and OpenGL 3.3 Maximum Power Consumption: 32W. Form Factor: Low Profile