Dell Optiplex 990 Mini Tower Desktop Quad Core i5-2400 3.10GHz 8GB DDR3 RAM 1TB HD DVD-RW Windows 7 Professional 64-Bit Intel Core i5 3.10 GHz quad-core CPU Intel Q67 Express chipset 8 GB DDR3 SDRAM 1 TB hard drive, DVD-RW drive Intel HD Graphics 2000