TheShape31 on 30 August 2012
1.5GB RAM total, with 512MB going to the OS. Source:
http://www.eurogamer.net/articles/2012-08-30-how-powerful-is-the-wii-u-really
The multiple SKUs most likely have to do with multiple system colors. There is no chance that one version will have a bigger hard drive, have different software bundled, etc.
