Dell OptiPlex CORE 2 Duo 3.00GHz 8GB RAM 500GB HDD 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. Dell 960 Core 2 Duo 3.0 GHz Processor What's Inside: 8GB RAM, 500GB Hard Drive, CD-RW / DVD Combo Optical Drive, Operating System: Windows 7 Professional-64 bit