Ars Reviews the Quadro 4000 Mac Edition: NVIDIA's sole Mac offering a promising start | Ars Technica
HP NVIDIA Quadro 4000 2GB PCIe 2.0 | Quadro | NVIDIA | Graphics Cards | Schneider Digital online shop
nVidia Quadro 4000 2GB GDDR5 PCI-E x16 2.0 Graphics Video Card With DVI and DisplayPort Outputs Dell Part Number: 38Xnm - Walmart.com
HP NVIDIA QUADRO 4000 2GB GDDR5 PCIe Video Card HP 671137-001 | eBay
HP Nvidia Quadro 4000 2GB GDDR5 Graphics Card 608533-003 DVI DisplayPort » eRecycler Online
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 :