Turkish said: OVER 9000!! Gigaflops would be enough I think.
I heard the emulated Wii games on Wii U are basically all running the Wii OS. |
To play the disc based games on the Wii channel it is using hardware backwards compatiblity and "switching to Wii hardware mode". The ones you download from the Wii U's eShop use an engine that is made to run on the Wii U. That is at least how Iwata put it when he announced Galaxy 2's release as the download.
http://kotaku.com/wii-games-will-finally-be-downloadable-on-wii-u-1679424895
If you watch the video in the link when they talk about the being able to use the Wii U's gamepad is an indication that they changed the engine of the game. (The io parts of the engine need to be reprogrammed to accept new forms of input.)