PNY Technologies NVIDIA Quadro RTX 4000 Graphic Card8 GB GDDR6256 bit Bus WidthPCI Express 3.0 x16 VCQRTX4000-SB - Corporate Armor
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 :
NVIDIA Quadro 4000 Computer Graphics Cards for sale | eBay