DELL,OPTIPLEX 780, MT, E8400 CORE 2 DUO, 2.93GHZ, DDR3, 4.0 GB, 750GB, DVD/RW, GB NIC, WINDOWS 7 PRO Desktop, Refurbished Intel E8400 CORE 2 DUO, 2.93GHZ 4GB memory 750 GB hard drive Integrated Graphics DVDRW Gigabit Ethernet LAN Windows 7 Professional...