818867-001 - HP NVIDIA QUADRO M4000 8GB GDDR5 GRAPHICS CARD PCI-E X16 FOR Z800 Z820 Z840 818867-001
PNY Quadro M4000 VCQM4000-PB 8GB 256-bit GDDR5 PCI Express 3.0 x16 Full Height Workstation Video Card - Newegg.com
NVIDIA on Twitter: "What's new in our Quadro lineup? The M4000 and M5000. Get the specs on these new #GPUs. http://t.co/dv1Iwb3HvI http://t.co/NeU8fDi7QU" / Twitter
NVIDIA Announces Quadro M5000 & M4000 Video Cards, DesignWorks Software Suite
NVIDIA Quadro M4000 Game Testing w/Precision T3620 - YouTube
NVIDIA Quadro M4000 | NVIDIA Professional Graphics - Leadtek