https://marco.org/2009/02/04/i-raced-my-macbook-air-and-my-work-mac-pro
I raced my MacBook Air and my work Mac Pro installing the iPhone SDK 2.2.1.
It wasn’t even close. This is where the Air was right before the Pro finished. The Air finished 14 minutes later. (Ah, the benefits of desktop hard drives.)
Surprisingly, this is not one of the geekiest things I’ve ever done.