I always wonder how this portability will work in practice, as for any "serious" gaming you'd still need an extra display, a power supply, extra game controllers, a means to connect these all. Also, how does the ever increasing need for more power (gaming), and smaller devices (portable) work together (in a way that non-portable systems can be replaced)? High end gaming systems today come with 1000W power supplies, even entry level systems use hundreds of watts.

Or am I missing something, is there some revolutionary new technology in sight, that will allow future GPUs perform like current high end vidcards with only fraction of their power usage?