HP 220 SFF, Z. Processor clock speed: 3400 MHz, Processor family: Intel Core i5, Processor manufacturer: Intel. Internal memory: 8192 MB, Internal memory type: DDR3, Memory slots: 4x DIMM. Hard drive capacity: 500 GB, Hard drive interface: Serial ATA, Hard drive rotational speed: 7200 RPM. Graphic adapter: HD Graphics 2500. Optical drive type: DVD Super Multi