Dell OptiPlex PC Pentium Dual Core E5300 2.60GHz - New 4GB RAM - 160GB HD DVD-RW Microsoft Windows 7 (Certified Refurbished) Pentium E5300 Dual-Core 2.60GHz Processor New 4GB DDR3 RAM (max 4GB) 160GB SATA hard drive DVDRW drive 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.