Lenovo A57e Tower, ThinkCentre. Processor frequency: 1.6 GHz, Processor family: Intel Atom, Processor front side bus: 533 MHz. Internal memory: 1 GB, Internal memory type: DDR2-SDRAM, Maximum internal memory: 4 GB. Total storage capacity: 160 GB, Hard drive interface: Serial ATA. Discrete graphics adapter model: Intel GMA 950. Operating system installed: Windows Vista Ultimate