HP Compaq DC7800CPU: Intel Core 2 Duo 2.33 GHzRAM:2 GBHard Drive: 80 GBIf you buy it without an operating system the price is only $50.If you buy it with the Linux Ubuntu version 14.4 operating system the price is $85.If you buy it with MS Windows 7 Pro and MS Office 2010 & MS Essentials the price is $110.Flatscreen monitor, power cords, keyboard & mouse are available for an extra small fee....Virus removal or Windows 7 re installation is $50.