Having more than one controller was always known to be possible. What is still up in the air is whether or not the GPU will be capable of displaying to the screen of more than one controller. Even assuming it can display to more than one controller, will it be capable of high res display on more than one? Or does multiple controllers force the quality to be broken down in order to make it possible? That is the question.
No it's not.
The GPU will be more than capable of displaying to the main screen and probably 4 uMotes too.
Eyefinity is capable of upto 6 screens, and even though Nintendo will want it customized, they might not even have to render more than 2 whole screens.
[I'm not a techie]I think the controller screen resolution was (or very close to) 1/4 a 1080p screen (800x~540).
So if the GPU was able to handle 2 1080p screens, but one broken into split screen (upto 4 split screens), then all it would have to do is send a quarter of each screen to each corresponding controller.
Now assuming that we likely won't have more than 2 Umotes per system, then the GPU really only has to render 1x1080p screen (main TV) and then 1/2 a 1080p screen for the uMotes.
Also considering most of what will be on the uMote screen will likely not be all that complex (menus, extra buttons, status screen/HUD, etc etc), there should still be plenty of horsepower left for the main 1080p screen.[/I'm not a techie]
The REAL question is what is the tech that Nintendo is using to stream the video from the console to the controller and how does that work?I've already made a post on similar tech and they all seem to be focused on sending the same video stream out to multiple devices. That would be 1 video streaming out to 6 different devices.
We need to know if the transmitting device Nintendo is using is capable of sending multiple streams to multiple devices, or do they need a different transmitter for every video stream receiver.