I worked for AMD up until two months ago. The Wii U GPU is based off the AMD E6760 GPU without the onboard memory supplied. At the time I left, I was aware that it will draw from a shared RAM pool of 1.5GB from the Wii U (DDR3-1800) and run at a clock speed of 824 mhz. The main CPU is a IBM power architecture quad core (with one disabled for yield, making it a tri-core) running at 3.0 ghz. The size of the eDRAM was not finalized before I left, nor was the clock speed of the main CPU. I got to work with two different engineering units, one had 3GB ram with the CPU clocked at 3.4 ghz and the other had 1.5GB ram with the CPU clocked at 3.0 ghz. I was told the 3.0 ghz unit was closest to production specs.