Sony VGN-NS21Z/S, VAIO. Colour of product: Silver. Processor frequency: 2.4 GHz, Processor family: Intel Core 2 Duo, Processor model: P8600. Internal memory: 4 GB, Internal memory type: DDR2-SDRAM, Memory clock speed: 800 MHz. Total storage capacity: 320 GB, Hard drive interface: Serial ATA, Hard drive speed: 5400 RPM. Display diagonal: 39.12 cm (15.4"), Display resolution: 1280 x 800 pixels, Aspect ratio: 16:10