Lenovo ThinkCentre M57e, 2.53 GHz, Intel® Core™2 Duo, 1 GB, 160 GB, DVD-ROM, Windows Vista Business Lenovo ThinkCentre M57e. Processor frequency: 2.53 GHz, Processor family: Intel® Core™2 Duo, Processor model: E7200. Internal memory: 1 GB, Internal memory type: DDR2-SDRAM. Total storage capacity: 160 GB, Optical drive type: DVD-ROM. Discrete graphics card model: Intel® GMA 3100. Operating system installed: Windows Vista Business. Power supply: 280 W. Chassis type: SFF. Product type: PC. Weight: 7.3 kg. Product colour: Black