By default, Asus Eee PC will run at 630 MHz only. Although it’s equipped with Celeron 900 MHz (see the screenshot below).
For most people, 630 MHz should run all applications quite smoothly. But for some other people, they expect more performance. Why I don’t get 900 from my 900 MHz processor? Check this tool.
With the help of eeectl, you can set your CPU fan, adjust screen brightness, and of course, adjust your processor speed. It’s a small and lightweight tool (21 KB only).
The result is, I can have my Eee PC runs at full 900 MHz speed 😉