Lenovo ThinkCentre M73 10AY0020US Mini Desktop (2.90 GHz Intel Core i5-4570T Processor, 4GB DDR3, 128GB SSD, Windows 7 Professional) Processor: Intel Core i5-4570T Dual Core CPU (4M Cache, 2.90GHz - 3.60 GHz) 35W 4GB DDR3 RAM; 128GB SSD Hard Drive Wireless: Intel 2230 b/g/n Graphics: Intel HD Graphics 4600 Windows 7 Pro 64 DG Windows 8