Citing "inside sources at Microsoft", the article states that the design of the Xbox One was based on a brief that bore the 10-year lifecycle in mind, in which the console would remain switched on.
As a result of the desire for the console to operate continuously for ten years, it would be required to function with adequate heat dissipation. The machine's cooling needs has produced a unit that measures 34x26x8cm and functions "almost silently".
Fan noise would only be noticeable during gaming, when the AMD processor is under duress.
Reducing game load times in the Xbox One are also listed as a key feature which Microsoft is addressing. By retaining "game states in RAM while the unit is inactive", users would allegedly be able to resume playing a game with minimal waiting time upon waking up the console.
Well I'm wondering if this thing has a 'sleep mode,' since this thing is so built like a PC and all. Nevermind, it seems to be that it does have a sleep mode. I'm psyched. :D I don't really wanna be signed in for ten years.