I believe the Wii U's AC adaptor is rated at 75 watts, that's what a poster on NeoGaf posted.
I'm expecting Wii U to be slightly more powerful than a PS3/360 with the advantage of a good deal more RAM. That's about it.
Even Mr. Miyamoto said the console won't be that much beyond the PS3/360. Nintendo needs to make a profit on this machine and give themselves price flexibility in case they have to drop the price (which they didn't have with 3DS, and caused them to have to suffer a loss to get the price down).
If the system was leagues beyond the 360/PS3 ... dev kits have been out for like 18 months now. We would've seen somthing that's a big jump.
Even with the Dreamcast, one look at Soul Calibur and NFL 2K an you could see it was far beyond the PS1/N64. I don't see Wii U being that sort of leap. At best I think it's the same jump between PSP and 3DS.
And really for Nintendo that's probably plenty. None of their IP need Samitaran type visuals and Nintendo's not going to eat a loss on hardware just for the sake of multiplat third party content.
