Delll Optiplex - Intel Pentium D 3.0ghz - 160GB HDD w/ New 4GB Memory - Windows 7 Professional - DvD-ROM-(Certified Reconditioned). 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 ,New Power Cord.New 4GB Memory.