Amazon.com: Quadro K5000 for Mac, 4GB GDDR5 PCI Express Gen 2 x16, DVI-I DL, DisplayPort, DirectX (Boot Camp), CUDA and OpenCL Profesional Board - Epic IT Service : Electronics
HP Quadro K5000 4GB GDDR5 Video Card (701980-001) for sale online | eBay
NVIDIA Quadro K5000 for Mac VCQK5000MAC-PB 4GB 256-bit GDDR5 PCI Express 2.0 x16 Workstation Video Card - Newegg.com
PNY VCQK5000-PB NVIDIA Quadro K5000 4GB256-bit PCI Express 3.0 x 16 HDCP Ready Workstation video card - Newegg.com