HP Smart Buy Z240 Tower Workstation; 400W 92% efficient Chassis Intel Core i7-6700 3.4 8M 4C CPU 1TB 7200 RPM SATA Hard Drive N/A 8GB DDR4-2133 non-ECC (1x8GB) RAM 9.5mm Slim SuperMulti DVDRW HP USB Keyboard/USB Optical Mouse Intel HD Graphics 530 Windo