Sony VGN-P31ZK. Processor clock speed: 1.86 GHz, Processor family: Intel Atom, Processor model: Z540. Internal memory: 3 GB, Internal memory type: DDR2-SDRAM. Hard drive capacity: 80 GB, Hard drive rotational speed: 4200 RPM, Hard drive interface: Ultra-ATA/100. Compatible memory cards: MS Duo, MS Pro Duo, SD. Display diagonal: 203.2 mm (8 "), Display resolution: 1600 x 768 pixels