HP Pavilion Slimline s3850nl Desktop PC, Pavilion. Processor frequency: 2.4 GHz, Processor family: AMD Phenom. Internal memory: 4 GB, Internal memory type: DDR2-SDRAM, Memory slots: 2x DIMM. Total storage capacity: 640 GB, Hard drive interface: Serial ATA, Hard drive speed: 7200 RPM. Discrete graphics adapter model: NVIDIA GeForce GT 120, Discrete graphics adapter memory: 512 MB, Maximum graphics adapter memory: 2303 MB. Operating system installed: Windows Vista Home Premium