I am typing this on a 1.5 Pentium M. Ya know what? The sucker runs HOT. It isn't anything to load a page on the tittie board and have my temp hit 60+.. Sure I use less battery, but burn your nads in the process?
The good news is, I get 2.5+ hours of battery life playing games on this. Nothing super intense, but a CD based game spins a ton. Actually got through a movie that was almost 2 hours long. Full charge, fire up the movie.