Intel® Pentium® Intel Pentium Lenovo ThinkCentre M57e, 2.2 GHz, Intel® Pentium®, 1 GB, 160 GB, DVD-RW, Windows Vista Business Lenovo ThinkCentre M57e. Processor frequency: 2.2 GHz, Processor family: Intel® Pentium®, Processor model: E2200. Internal memory: 1 GB, Internal memory type: DDR2-SDRAM, Memory clock speed: 667 MHz. Total storage capacity: 160 GB, Optical drive type: DVD-RW. Discrete graphics card model: Intel® GMA 3100. Operating system installed: Windows Vista Business. Power supply: 280 W. Chassis type: Small Desktop. Product type: PC. Weight: 16.1 lbs (7.3 kg). Product color: Black