Nvidia Quadro 4000 2GB GDDR5 256 Bit Dual Display/ DVI PCI-e 0731Y3 | eBay
Refurbished: nVidia Quadro 4000 2GB GDDR5 PCI-E x16 2.0 Graphics Video Card With DVI and DisplayPort Outputs 38XNM Standard Height Workstation Video Card - Newegg.com
Amazon.com: NVIDIA Quadro 4000 by PNY 2GB GDDR5 PCI Express Gen 2 x16 DVI-I DL, Dual DisplayPort and Stereo OpenGL, DirectX, CUDA, and OpenCL Professional Graphics Board, VCQ4000-PB : Electronics
NVIDIA Quadro 4000 2GB GDDR5 Video Card - DISCOUNT ELECTRONICS