HP Pavilion p6050nl Desktop PC, Pavilion. Processor frequency: 2.66 GHz, Processor family: Intel Core 2 Quad, Processor model: Q9400. Internal memory: 4 GB, Internal memory type: DDR2-SDRAM. Total storage capacity: 1000 GB, Hard drive interface: Serial ATA, Hard drive speed: 5400 RPM. Discrete graphics adapter model: AMD Mobility Radeon HD 4650, Discrete graphics adapter memory: 1024 MB, Maximum graphics adapter memory: 2815 MB. Operating system installed: Windows Vista Home Premium