Lenovo ThinkCentre M55e, ThinkCentre. Processor clock speed: 1.6 GHz, Processor family: Intel Celeron, L2 cache: 0.512 MB. Internal memory: 1 GB, Maximum internal memory: 4 GB, Memory layout: 1 x 1 GB. Total storage capacity: 80 GB, Hard drive rotational speed: 7200 RPM, Hard drive interface: Serial ATA. Discrete graphics adapter model: GMA 3000. Audio system: ADI 1986 A