Lenovo M91p, ThinkCentre. Processor clock speed: 3.4 GHz, Processor family: Intel Core i7, Processor model: i7-2600. Internal memory: 4 GB, Maximum internal memory: 16 GB, Memory layout: 1 x 4 GB. Total storage capacity: 500 GB, Hard drive capacity: 500 GB, Hard drive rotational speed: 7200 RPM. Discrete graphics adapter model: AMD Radeon HD 5450, Discrete graphics adapter memory: 512 MB. Audio system: HD