HP Compaq Elite 8200 Tower PC Core i5-2400 3.10 GHz 4 GB DDR3 RAM 160 GB HD DVD-RW Windows 7 Professional 64-Bit Intel Core i5-2400 3.10 GHz quad-core processor , 6 MB Intel Smart Cache, 3.4 GHz Max Turbo Frequency 4 GB DDR3 RAM (supports up to 8 GB) 160 GB hard drive, DVD-RW SATA drive NVIDIA GeForce 512MB Dual DVI Video Card Video Card Microsoft Windows 7 Professional 64-Bit pre-installed w/CoA