NVIDIA Quadro 4000 by PNY 2GB GDDR5 PCI Express Gen 2 x16 DVI-I DL, Dual DisplayPort and Stereo OpenGL, DirectX, CUDA, and OpenCL Profesional Graphics Board, VCQ4000-PB Next-Generation NVIDIA CUDA Architecture Fast 64-Bit Floating Point Precision NVIDIA Scalable Geometry Engine NVIDIA GigaThread Engine Dual Copy Engines