We have an interesting rumour on our hands, and one that is most likely sketchy.
It has been revealed by a poster on TVtropes that the latest system update has boosted the Wii U CPU and GPU clock speeds. The boost is over 50% for the CPU which makes this whole thing really doubtful considering the heat issues that will undoubtedly be generated.
The Wii U system update had decreased the loading times in the menu and made the browsing a lot better. It’s not clear whether what this poster says is true because it’s yet to be verified.
Here’s his post:
CPU: IBM PowerPC 7xx-based tri-core processor “Espresso” clocked at 1.24 GHz before the 3.0.0 update, 3.24 GHz after the 3.0.0 update. This is an evolution to the Broadway chip used in the Wii, is 64 bit and uses Power6 technote When IBM has said that Nintendo has licensed the Power7 tech from IBM, Nintendo is not using it for the Wii U, explaining its backwards compatibility.
GPU: AMD Radeon High Definition processor codenamed “Latte” with an eDRAM cache built onto the die clocked at 550 MHz before the 3.0.0 update, 800 MHz after the 3.0.0 update.
Take it with a pinch of salt of course. Such a leap in clock speed seems really unreal and there’s no way it’s possible for Nintendo to do such a major tweak through a system update.