HP Z420 Workstation; 600W 90% Efficient Chassis; Intel Xeon E5-1607 3.00Ghz 10MB 1066 4C CPU; 500GB 7200 RPM SATA 6G Hard Drive; 8GB DDR3-1600 ECC (4x2GB) Unbuffered RAM; 16X SuperMulti DVDRW SATA ODD; HP USB Keyboard/USB Optical Mouse; NVIDIA Quadro K600 1GB DL-DVI(I)+DP. No cables included.; Windows 7 Professional 64 installed with Windows 8 Professional License; Limited 3 years parts, 3 years labor, and 3 years onsite service (3/3/3) standard warranty.