Lenovo M73z 10BC0004US 20-Inch All-in-One Desktop (2.9 GHz Intel Core i5-4570S Processor, 4GB DDR3, 500GB HDD, Windows 7 Professional) Black (Discontinued by Manufacturer) Intel Core i5 2.8GHz Processor 2.9 GHz( cache) 2GB DDR3 500 GB 7200 rpm Hard Drive 20-Inch Screen Windows 8