> If you're a developer, you should have the best development gears you can afford.
There's also the school of thought that you should be using the hardware configuration you expect most users will be running and make sure your product runs acceptable on it.
Giving the devs highly powered machines just removes them from what the majority of users will experience. While most people still surf the web with Core 2 Duo machines many webdevs have overpowered i7 rigs with gigabytes of RAM. And that's why so many JavaScript loaded websites are unusable on anything but the latest quadcore i7 systems nowdays.