HP Smart Buy Z230 Small Form Factor Workstation; SFF 240W 92% Efficiency Chassis; Intel Xeon E3-1241v3 3.5 8M GT0 4C HT CPU; HP Z Turbo Drive 256GB PCIe SSD; 16GB DDR3-1600 ECC (2x8GB) Unbuffered RAM; NVIDIA Quadro K620 2GB graphics; 16X SuperMulti DVDRW SATA ODD; HP USB Keyboard/USB Optical Mouse; 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.