Compaq 610 extra cooling fan

As my laptop computer get really hot when I use it hard, I added an extra fan at the ram opening under the computer.
You probably know that hot computers are not performing as cool running ones, so it is important to keep temperatures down as much as possible.
Now it is really cooling well, at normal use it is completely cold while before it was warm even when idling. It may even be that it's internal fan is not working like before, but now it cools really well. When using lot of cpu it gets