Dell NVIDIA Quadro RTX4000 8GB Full Height Graphics Card | Dell USA
NVidia Quadro 4000 Q4000 2G DDR5 Video Graphics Card DVI DP for Mac Pro 3.1-5.1 | eBay
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
HP nVidia Quadro 4000 2GB GDDR5 PCI-E x16 Video Card WS095AA [HP Quadro 4000] - $299.95 : Professional Multi Monitor Workstations, Graphics Card Experts
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 :