ethomaz on 05 February 2013
Digital Foundry article...
http://www.eurogamer.net/articles/df-hardware-wii-u-graphics-power-finally-revealed
320:16:8 - Similar to HD 4650/4670.
The best part "crucial information simply wasn't available in Nintendo's papers, with developers essentially left to their own devices to figure out the performance level of the hardware."
Now we know why third-party don't like Nintendo lol.
Essay Pro