DELL S15Z-2289CPO. Processor clock speed: 2.4 GHz, Processor family: Intel Core i5, Processor model: i5-450M. Internal memory: 4 GB, Internal memory type: DDR3-SDRAM. Total storage capacity: 500 GB, Storage media: HDD, Hard drive capacity: 500 GB. Display diagonal: 396.2 mm (15.6 "), Aspect ratio: 16:9. On-board graphics adapter model: Intel HD Graphics