So I read about a cydia app to overclock my iPad.
I just had to try it, and I'm very pleased with the speed increase overall.
One of the things mentioned in the article I stumbled over was, that the battery wouldn't last as long, but I haven't really recognized that yet.
I've set my iPad to overclock 4 and my iPod on 3 (just in case as I don't have a power outlet available at all times).
Did anyone try this yet and has some impressions about the battery?