i was watching a movie online and it gave me an ideal for addon that would be pimp as hell for boxers not shore if u can do it in a macro but here it is
http://www.warcraftmovies.com/movieview.php?id=88467

in the movie hes got a chart not shore that it dose
but somthing like that to show computer power usage would be nice to no whats taxen what when your doing stuff in wow