[citation][nom]insider3[/nom]Amazing how slimmer is better when it comes to consoles, but worst when it comes to gaming PC's. You need ventilation inside the case. This thing seems promising though. I do like the kinect, I already own a Gaming Rig+PS3 and I see nothing wrong with owning both consoles. It seems like Microsoft fixed its flaws.[/citation]
Efficiency is better no matter how you look at it. If a gaming PC was a set top box with predetermined components the airflow could be designed completely around that, and would probably do better to have a slimmer design that could concentrate the airflow into one very efficient set path. An important factor here being the HDD's, which give off radiant heat and need the space in a PC...not so when the HDD is attached to the outside right next to a vent like it is in the 360S.
Besides, who doesn't have liquid cooling these days?