Dell Precision Tower 5820 Tower. Intel Xeon W-2123 3.6GHz, 3.9GHz Turbo, 4C, 8.25M Cache, HT, (120W) DDR4-2666.16GB (2x8GB) 2666MHz RDIMM ECC.2.5" 256GB SATA Class 20 Solid State Drive + 1TB 7200RPM SATA Hard Drive.Windows 10 Pro for Workstation (up to 4