HP Pavilion Slimline s3820nl. Processor frequency: 2.6 GHz, Processor family: AMD Athlon X2, Processor model: 5000+. Internal memory: 3 GB, Internal memory type: DDR2-SDRAM, Maximum internal memory: 4 GB. Total storage capacity: 500 GB, Hard drive interface: Serial ATA, Hard drive speed: 7200 RPM. Discrete graphics adapter model: NVIDIA GeForce G100, Discrete graphics adapter memory: 256 MB. Operating system installed: Windows Vista Home Premium