HP 620, Z. Processor family: Intel Xeon, Processor clock speed: 2 GHz, Processor model: E5-2620. Internal memory: 16 GB, Internal memory type: DDR3, Memory clock speed: 1600 MHz. Hard drive capacity: 1000 GB, Hard drive interface: Serial ATA, Hard drive rotational speed: 7200 RPM. Optical drive type: DVD Super Multi. Audio system: HD