It will be powerful enough to show the interaction between the hardware line-up. Games will look very good.
I also think they will use more "mobile" chips and on the shelf components, so it could perform powerwise like a PS4 but focusing on other features.
Proud to be the first cool Nintendo fan ever
Number ONE Zelda fan in the Universe
Prediction: No Zelda HD for Wii U, quietly moved to the succesor
Predictions for Nintendo NX and Mobile