HP Smart Buy Z230 Tower Workstation; Tower 400W 92% Efficiency Chassis; Intel Xeon E3-1246v3 3.5 8M GT2 4C HTCPU; HP Z Turbo Drive 256GB PCIe SSD; 1TB 7200 RPM SATA 2nd Hard Drive; 16GB DDR3-1600 ECC (2x8GB) Unbuffered RAM; Slim 8X SuperMulti DVDRW SATA ODD; HP USB Keyboard/USB Optical Mouse; Intel HD Graphics P4600; Windows 7 Professional 64 installed with Windows 8.1 Professional License; HP ENERGY STAR Qualified Configuration; Limited 3 years parts, 3 years labor, and 3 years onsite service (3/3/3) standard warranty.