Sony VGN-P21Z/W. Product type: Netbook. Processor frequency: 1.33 GHz, Processor family: Intel Atom, Processor model: Z520. Internal memory: 2 GB, Internal memory type: DDR2-SDRAM, Memory clock speed: 533 MHz. Hard drive interface: Ultra-ATA/100, Hard drive speed: 4200 RPM, Compatible memory cards: MS Duo, MS PRO Duo, SD. Display diagonal: 20.32 cm (8"), Display resolution: 1600 x 768 pixels