Sony VPCW11S1E/W. Processor clock speed: 1.66 GHz, Processor family: Intel Atom, Processor model: N280. Internal memory: 1 GB, Memory slots: 1x SO-DIMM, Internal memory type: DDR2-SDRAM. Hard drive capacity: 160 GB, Hard drive rotational speed: 5400 RPM, Hard drive interface: Serial ATA. Compatible memory cards: MS PRO, MS PRO Duo, SD. Display diagonal: 256.5 mm (10.1 "), Display resolution: 1366 x 768 pixels