Lenovo ThinkCentre M55p, 1.86 GHz, Intel® Core™2 Duo, E6320, 2 GB, 160 GB, Windows Vista Business Lenovo ThinkCentre M55p. Processor frequency: 1.86 GHz, Processor family: Intel® Core™2 Duo, Processor model: E6320. Internal memory: 2 GB, Internal memory type: DDR2-SDRAM, Memory clock speed: 667 MHz. Total storage capacity: 160 GB. Operating system installed: Windows Vista Business. Power supply: 310 W. Chassis type: Tower. Product type: PC. Weight: 29.8 lbs (13.5 kg). Product color: Black