HP Smart Buy Z230 Tower Workstation; Tower 320W Standard Efficiency Chassis; Intel Xeon E3-1231v3 3.4 8M GT0 4C HT CPU; 1TB 7200 RPM SATA Hard Drive; 8GB DDR3-1600 ECC (1x8GB) Unbuffered RAM; Slim 8X SuperMulti DVDRW SATA ODD; HP USB Keyboard/USB Optical Mouse; NVIDIA Quadro K420 1GB; Windows 7 Professional 64 installed with Windows 8.1 Professional License; Limited 3 years parts, 3 years labor, and 3 years onsite service (3/3/3) standard warranty.