Well, someone has snapped a photo of an Xbox next to an Xbox 360.
On the right is the Xbox, on the left the 360. Well…not much smaller is it? And since the hard drive for the newer one attaches to what would be the top of it in this picture, it will be the same size.
So some of you are probably thinking “So? You won’t have the first one to deal with anymore.” WRONG! It seems the 360 is only backwards compatiable with SOME of the games from the Xbox. So to be able to play your entire collection of games, you will still need to keep the first system around. Oh joy. More space taken up!