HP Compaq 6200 Pro Small Form Factor PC (ENERGY STAR), Compaq Pro. Processor clock speed: 3.3 GHz, Processor family: Intel Core i5, Processor model: i5-2500. Internal memory: 4 GB, Maximum internal memory: 16 GB, Memory layout: 1 x 4 GB. Total storage capacity: 500 GB, Hard drive rotational speed: 7200 RPM, Hard drive interface: Serial ATA II. Audio system: HD, Audio output channels: 2.0. Optical drive type: DVD Super Multi