The Wii U has a CPU that wipes the floor with Cell and Xenon. It is a very, very nice processor.
The GPU does as well. People have been lowballing this aspect of the system for a while. It is quite the performer.
The RAM allows both to work with a lot more resources and will allow for greater variation in textures, animations, larger assets, higher texture res, etc. this will be the first time a videogame system can actually truly benefit from the greater storage capacity of Blu-ray derived media as the RAM allows for larger chunks of that media to be in play.
The Wii U is quite a bit more powerful than the 360 and PS3.
Old dev kits from last year featured a quad core Power chip clocked at 3 ghz.
Today, the chip has been upgraded (not clocked higher).
The GPU used to be from 2010. It now has the foundation of a card released in early 2011 that has been enhanced and tailored to the console.
I wouldn't rule out a 10x performance jump from current systems when the overall hardware is factored in (in this case, the performance of the whole is much greater than the sum of its parts). And it will be noticeable. Not like the 360 from the PS2, but similar to the GCN from the N64. There will be some small similarities - especially at first - then there will be major differentiators. We won't see this until about a year after launch however due to political games and development time with final kit.
At launch, the Wii U will look slightly better than 360 and PS3. A year later, it will look far better.
I'm not disputing any of this.
Just being an out of order processor means it wipes the FLOOR with any in order processor remotely close in clock speed.
Just that alone means wii us say missed branch prediction penalty will be non existant compared to the whoppers that xenon and cell had...
YES, the gpu is going to be pretty dang good.
But not to the extent needed for a jump in graphical fidelity like we saw with ps2 to ps3.
NO SYSTEM is going to make that jump this time.
Its just not in the cards right now. The wii u is not going to be left behind like the wii. I don't even think the gap is going to be ps2 to xbox size.
But at the same time I'm not going to start singing the praises of the system until I'm sure its not going to be misinterpreted or joined into a stream of hype like the wii u is going to be to 360 what 360 was to xbox. Because its not, and I don't want to have to deal with the fallout of such ridiculous expectations.