Lenovo M81, ThinkCentre. Processor clock speed: 3.1 GHz, Processor family: Intel Core i3, Processor model: i3-2100. Internal memory: 2 GB, Maximum internal memory: 16 GB, Memory layout: 1 x 2 GB. Total storage capacity: 250 GB, Hard drive capacity: 250 GB, Hard drive rotational speed: 7200 RPM. Discrete graphics adapter model: HD Graphics. Audio system: HD