On the newer Xbox 360 Slim models the base 4GB internal memory version ($199), is the full 4GB of internal memory usable, or is some of it partitioned for other uses like the dashboard software, etc.? If it's not all usable, how much is left over for use for profiles, save games and other items?
I know that on my older 20GB hard drive model, only about 13-14GB of space were actually usable after formatting and dashboard software and whatnot.