On the larger 13-inch MacBook Air, the default 4GB of RAM and 128GB SSD feels like enough for everyday use. On the smaller 11-inch model, you only get 2GB of RAM and a 64GB SSD for that much-hyped $999 entry price. Of that 64GB, only about 48GB is available to use after accounting for the operating system and preinstalled apps. With a big music or video collection, or lots of high-end games, that can start to feel crowded pretty quickly. Upgrades to both 128GB and 256GB drives are available for the 11-inch, and adding a 256GB drive brings the price to $1,499. Both sizes can also trade up to a Core i7 CPU, which costs $1,349 for the 11-inch and $1,599 for the 13-inch.
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