Dell OptiPlex 790 SFF Desktop PC - Intel Core i3-2120 3.3GHz 4GB 250GB DVDRW Windows 7 Pro (Certified Refurbished) Dell OptiPlex 790 SFF Desktop Hard Drive: 250 GB RAM Memory: 4 GB CPU Processor: Intel i3- 2120 @ 3.3 GHz OS: Windows 7 Pro