2 Ghz Dual-core is more than enough for an honest days work.
What the hell are you comparing these chips to by the way? Sci-Fi movies? I am afraid I have a newsflash for you, this is reality, we can't beam you up Scotty.
Your expectations are as unfounded and unreasonable as me saying humans should be able to fly like Superman (so without a plane, rocket, jet, jetpack etc.).
You clearly don't know the first thing about chips, circuits, eletronics, processors...sure I know very little as well but I do know more than you.
Rather than complaining that they get so hot, you should google and see if you can find out why, only once you even remotely understand why can you make complaints that it's unreasonable.