Both models feature a backlit keyboard, a large multitouch trackpad, a magnetically latching power connector called MagSafe 2 -- which automatically disconnects when the plug is pulled too hard - two USB 3 ports, and Thunderbolt connectivity. Both models are equipped with the Intel HD Graphics 4000 chipset -- which isn't close to the most powerful graphics card on paper, but should handle anything you'd use this machine for just fine.

The Air comes equipped with 4GB of memory by default, and the memory cannot be upgraded later; it's soldered onto the logic board. If you're having trouble deciding, here's the key to deciding how much memory you need: you're better off having too much than too little.

Where the Air models start to separate is in speed and storage. The entry-level 11" comes with 64GB, and the 13" comes with 128GB (both customizable to 512GB). The 13" model also comes with an SDXC card slot.

Both Air models use Intel's Core i5, but the 11" uses the 1.7GHz dual-core i5; the 1.8GHz i5 powers the entry model 13". Intel's Turbo Boost technology pushes the clock speed to higher frequencies when extra power is necessary.

Apple states the battery life on these machines at 5 hours and 7 hours, respectively; and it's possible to make the Air last for, say a school day, with some basic power management.