Intel® Pentium® Intel Pentium Lenovo ThinkCentre A70, 2.8 GHz, Intel® Pentium®, 2 GB, 320 GB, DVD-RW, Windows 7 Professional Lenovo ThinkCentre A70. Processor frequency: 2.8 GHz, Processor family: Intel® Pentium®, Processor model: E5500. Internal memory: 2 GB, Internal memory type: DDR3-SDRAM. Total storage capacity: 320 GB, Optical drive type: DVD-RW. Operating system installed: Windows 7 Professional. Power supply: 180 W. Chassis type: SFF. Product type: PC. Product colour: Black