HP Z420 Desktop Workstation Intel Xeon Quad Core 3.6GHz 24GB RAM 2TB Hard Drive NVIDIA Quadro 4000 Graphics DVDRW Windows 10 Pro 64-bit HP Z420 Workstation 4-Core 3.60GHz Intel Xeon E5-1620 24GB RAM / 2TB Hard Drive Quadro 4000 Windows 10 Professional w/ Media Disc / Keyboard & Mouse