HP Pavilion p6250nl Desktop PC, Pavilion. Processor frequency: 2.66 GHz, Processor family: Intel Core i5-xxx, Processor model: i5-750. Internal memory: 4 GB, Internal memory type: DDR3-SDRAM. Total storage capacity: 1000 GB, Hard drive interface: Serial ATA II, Hard drive speed: 5400 RPM. Discrete graphics adapter model: NVIDIA GeForce GT 220, Maximum graphics adapter memory: 2815 MB. Operating system installed: Windows 7 Home Premium