Measuring in at 0.76 inches at its thickest point, the MacBook Air is the thinnest notebook ever to hit the market. But how does it stand up against its predecessors, Apple's stalwart sellers, the MacBook and the Macbook Pro?

Gizmodo recently ran some real world benchmarks on the MacBook Air, pitting it against the MacBook and the MacBook Pro. They ran some tests to see how much the three MacBooks differ from each other in speed.

And the verdict? The MacBook Pro outperformed its siblings on all tests except one, which goes to the MacBook Air. Check out the results above by clicking on the image. Well, keep in mind the MacBook Air had to sacrifice some things to get that sexy.

Here are the specs of the three MacBooks that they used in the tests:

• The MacBook Air has a 1.6 GHz custom Intel processor, 2 GB 667 MHz DDR2 RAM, and an 80 GB, 1.8", 4200 RPM HDD.
• The MacBook (a generation old) has a 2 GHz Intel Core Duo processor, 1 GB 667 MHz DDR2 RAM, and a 120 GB, 2.5", 5400 HDD.
• The MacBook Pro (also a generation old) has a 2.2 GHz Intel Core Duo processor, 2GB 667 MHz DDR2 RAM, and a custom 160 GB, 2.5", 5400 RPM, Seagate Momentus HDD.