HP Smart Buy Z840 Workstation; 1125W 90% Efficient Chassis; Intel Xeon E5-2630v3 2.4 1866 8C CPU; 1 TB 7200 RPM SATA Hard Drive; 16GB DDR4-2133 (2x8GB) RegRAM; Slim SuperMulti DVDRW; HP USB Keyboard/USB Optical Mouse; NVIDIA Quadro K4200 4GB graphics; Windows 7 Professional 64 installed with Windows 8.1 Professional License; ENERGY STAR Qualified Configuration; Limited 3 years parts, 3 years labor, and 3 years onsite service (3/3/3) standard warranty.