NVIDIA Quadro K4000 VCQK4000-PB 3GB 192-bit GDDR5 PCI Express 2.0 x16 Full Height Workstation Video Card - Newegg.com
490-0846 Dell 3GB nVidia Quadro K4000 Video Graphics Card
QUADRO K4000-DELL - Used - DELL NVIDIA QUADRO K4000 KEPLER GPU 3GB 768 CUDA CORES MEMORY INTERFACE 192 BIT GDDR5 MEMORY BANDWIDTH 134.0GB/S PCI-E 2.0 X16 ( 1 ) ONE DUAL LINK
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 :