My comment was simply meant to point out that comparing an old devkit (I'm assuming the original poster means the CEB-1000/'Shrek' style one here) against a slim rackmount (as shown in the E3 presentation slides) and saying the 'Shrek' kit is 'something like a rackmount unit' is either the dumbest thing I've ever read, or it just means the original poster has seen a rackmount unit that is close to the size of my fridge. Which is *madness*.
Infact, comparing even the current crop of CEB-20x0 units against a rackmount is something only Stevie Wonder could do with a straight face.
Finally, please note that there is no choice. Meat pies go with brown sauce.. not that ketchup rubbish.
Dean