Lenovo ThinkStation E20, ThinkStation. Processor clock speed: 3060 MHz, Processor family: Intel Core i3, Processor front side bus: 1333 MHz. Internal memory: 2048 MB, Internal memory type: DDR3, Maximum internal memory: 16 GB. Hard drive capacity: 500 GB, Hard drive interface: Serial ATA, Hard drive rotational speed: 7200 RPM. Graphics adapter manufacturer: Intel GMA. Optical drive type: DVD-RW