HP Z1 Workstation, Z. Processor clock speed: 3300 MHz, Processor family: Intel Core i3, Processor model: i3-2120. Internal memory: 4096 MB, Internal memory type: DDR3, Memory slots: 4x DIMM. Hard drive capacity: 1000 GB, Hard drive interface: Serial ATA, Hard drive rotational speed: 7200 RPM. Graphic adapter: HD Graphics 2000, Graphics adapter family: Intel. Optical drive type: DVD Super Multi