PNY Technologies NVIDIA Quadro P620 Graphic Card2 GB GDDR5Low-profile128 bit Bus WidthPCI Express 3.0 x16DisplayPort VCQP620V2-PB - Corporate Armor
HP Quadro 4000 WS095AT 2GB 256-bit DDR5 PCI Express 2.0 x16 Workstation Video Card Workstation Graphics Cards - Newegg.com
Dell Nvidia Quadro 4000 2GB GDDR5 Graphics Card
Amazon.com: NVIDIA Quadro 4000 for Mac by PNY 2GB GDDR5 PCI Express Gen 2 x16 DVI-I DL, DisplayPort and Stereo OpenGL, DirectX (Boot Camp), CUDA and OpenCL Profesional Graphics Board, VCQ4000MAC-PB :