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 :
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
B9C78AA - Refurbished - HP NVIDIA QUADRO 1000M GFX GPU 2GB 96 CUDA CORES MEMORY INTERFACE 128 BIT DDR3 MEMORY BANDWIDTH 28.8GB/S MOBILE PCI-EXPRESS MODULE ( MXM ) PCI-E 2.0 MID RANGE