Nvidia Quadro K4000 3gb Dvi / 2x Dp Video Graphics Card 0d5r4g - Network Cards - AliExpress
NVIDIA Quadro K4000 VCQK4000-PB 3GB 192-bit GDDR5 PCI Express 2.0 x16 Full Height Workstation Video Card - Newegg.com
700104-001 - New Other - HP NVIDIA QUADRO K4000 GRAPHICS CARD 3GB 768 CUDA CORES MEMORY INTERFACE 192 BIT GDDR5 MEMORY BANDWIDTH 134.0GB/S PCI-E 2.0 X16 ( 1 ) ONE DUAL LINK