It does not look like the PowerPC 750 or the Wii's CPU. However, they could just used a different (modern) algorithm the generate this new circuit layout in order to optimize size, power consumption and performance.
Also, I would love to know what type of SIMD instructions the processor offers, this will allow us understand how the performance of a optimized (in this case vectorized) code compares to a simple code ported to the CPU.








