Dell OptiPlex/Core 2 Duo E8400 @ 3.00 GHz/ New 8GB DDR3 / 1TB HDD/DVD-RW/WINDOWS 7 PRO 64 BIT This certified reconditioned product is tested and certified by the manufacturer or by a third-party seller to look and work like new, with some signs of wear. The reconditioning process includes functionality testing, inspection and repackaging. Windows 7 Professional 64bit PACKAGE DOES NOT include monitor or keyboard/mouse