There's never been a laptop as skinny as the new MacBook Air from Apple. At its thinnest, it measures just about four millimetres.The MacBook Air is instead a full-value laptop with a robust aluminium casing with a 13-inch display and a full sized keyboard.With an Intel Core 2 Duo processor with 1.6 or 1.8 gigahertz (GHz) of processing power, Apple has certainly sent its new laptop out into the world with a significantly stronger CPU than the Japanese devices against which it is competing.The standard model contains a 1.8 inch hard drive offering 80 gigabytes (GB) of storage space. Users only needs to hand out another $900 can upgrade to a 64 GB Flash hard drive. Flash memory works more quickly than a hard drive and consumes less power. The battery in the MacBook Air lasts five hours when working with a traditional hard drive.