Dell Optiplex 780 Tower, Windows 7 Professional, Fast and Powerful 2.33GHz Core2 Duo Processor, 4GB DDR2 High Performance Memory, Large 1000GB (1 Terabyte) SATA Hard Drive, DVD/CDRW
Dell Optiplex 780, Windows 7 Home Premium, Fast and Powerful 2.33 Core2 Duo Processor and and Windows 7 Home Premium, 4GB DDR2 High Performance Memory, Large 250GB SATA Hard Drive, DVD/CDRW: Computers & Accessories