When we need a bigger monitor to do the ARTWORK for the iPhone version of X-Plane (for example), all we would do is say the word and huge cases full of Quad-Core desktops and 30-inch monitors were rolled into our office. Why the huge cases to hold this stuff? As it turns out, we were given the SAME computers that are shipped off to Hollywood to appear in movies! Apple has a reserve of the latest and coolest hardware to appear in movies, and they lent THOSE computers to us to do the X-Plane for iPhone development.
By the way, their description of their time at Apple (including the above quote) has disappeared from their site. I guess Mr. Jobs didn't enjoy seeing his company's secrets all over the web.