NVIDIA Quadro K4000 ultra-fast Performance 3GB Graphics Card - Great for AutoCad!
LENOVO PCI-E Nvidia Quadro K4000 3GB GDDR5 Video Card - 2 x DisplayPort DVI - 03T8312
Amazon.com: Epic IT Service – Quadro K4000 with Two DP Ports, one DVI Port, and Supports Three Monitors, 4K Resolution via DP or HDMI (1 Year Warranty) : Electronics