http://www.gizmodo.com/gadgets/home...ew-part-three-xbox-2-and-xbox-live-029382.php
Hmmmm.
Gates: [... stuff deleted ...]
There's no way portable gaming can come anywhere near the high-definition gaming that we'll offer in the console-based product. The amount of power and heat that we get to budget for that [console] is two orders of magnitude more than you can do with a portable device.
Just to get, you know—we have to have fans, we have to have multiple fans. I mean, we're turning out hundreds of watts in that thing because the processor and the graphics are just total state-of-the-art incredible devices.
Hmmmm.