... Atom N450 1.66MHz 512KB second level cache 667MHz system,bus frequency, Support hyper-threading technology and 64-bit technology3,Memory DDR2 1GB / 2GB4 ... ,Disk Capacity 2.5 inch 160G / 250 / 320G5,Webcam built in 1.3M high definition ... ,Expansion interface 3* USB 2.0, VGA, Audio Input/output,1*SD/MMC card reader9,Battery Use about 2.5 hours10 ...