Lenovo ThinkCentre A70, 3.06 GHz, Intel® Core™2 Duo, 2 GB, 500 GB, DVD-RW, Windows 7 Professional Lenovo ThinkCentre A70. Processor frequency: 3.06 GHz, Processor family: Intel® Core™2 Duo, Processor model: E7600. Internal memory: 2 GB, Internal memory type: DDR3-SDRAM, Memory clock speed: 1333 MHz. Total storage capacity: 500 GB, Optical drive type: DVD-RW. Discrete graphics card model: Intel® GMA X4500. Operating system installed: Windows 7 Professional. Power supply: 180 W. Chassis type: Tower. Product type: PC. Product color: Black