HP Pavilion a6621nl-m. Processor frequency: 2.53 GHz, Processor family: Intel Core 2 Duo, Processor model: E7200. Internal memory: 3 GB, Internal memory type: DDR2-SDRAM, Memory slots: 2x DIMM. Total storage capacity: 500 GB, Hard drive interface: Serial ATA, Hard drive speed: 7200 RPM. Discrete graphics adapter model: AMD Radeon HD 3650, Discrete graphics adapter memory: 512 MB, Maximum graphics adapter memory: 1791 MB. Operating system installed: Windows Vista Home Premium