Lenovo T420, ThinkPad. Processor clock speed: 2.3 GHz, Processor family: Intel Core i5, Processor model: i5-2410M. Internal memory: 4 GB, Memory clock speed: 1333 MHz, Memory slots: 2x SO-DIMM. Total storage capacity: 500 GB, Hard drive capacity: 500 GB, Hard drive rotational speed: 7200 RPM. Display diagonal: 355.6 mm (14 "), Display resolution: 1600 x 900 pixels, Display brightness: 250 cd/m². Maximum graphics adapter memory: 1000 MB, Maximum resolution: 1600 x 900 pixels