Amazon.com: HP 616078-001 NVIDIA Quadro 6000 PCIe graphics card - With 6.0GB GDDR5 GPU memory, max resolution 2560x1600, max power consumption 204Watt, one Dual Link DVI-I and two DisplayPorts connections : Electronics
NVIDIA QUADRO 6000 6.0GB PCIE VIDEO ADAPTER (699-51030-0500-100) | eBay
NVIDIA Quadro 6000 6GB GDDR5 0X256P Professional GPU Video Card FREE S/H 88563107299 | eBay