The Dell OptiPlex 390 desktop PC delivers powerhouse computing thats ideal for everyone. The Dell OptiPlex 390 comes with a Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz processor, and the Genuine Windows 7 Professional 64 Bit Operating System Only. This desktop computer also includes 8192mb of DDR3 memory, a 1 Terabyte Serial ATA hard drive, DVD ROM optical drive and a NEW standard keyboard / mouse. This desktop comes fully loaded with Microsoft Windows 7 Professional 64 Bit! This package will arrive with a restore partition and has been recently restored with Windows so you will be the first to use it. The restore partition will allow you to restore your computer back to the original state of purchase at any time and prevent expensive trips to the computer repair shop.