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petalpusher on 28 August 2013
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Pemalite said:

Rubbish.
The Wii U's CPU architecture is vastly improved over it's older brothers.
For starters it's not just more caches, cores and frequency, it brings with it an OoO execution engine which vastly improves efficiency, new SIMD instructions, wider and faster caches and interconnects.
The difference however would be like comparing an Intel Atom (In Order CPU) to AMD's Brazos (Out of Order) at the same clock and cores. - Put it this way, Brazos makes Atom look pathetic when software doesn't take advantage of more than 2 threads.


The Wii CPU was OoO already... That's a bad start for you. It's still a Powerpc (750x family) wich no one on earth use anymore, and was basically designed in the previous century (1999). The cell and Xenon however were in order cpu. OoO is better for poorly optimized cpu code in general, but that's not such a big deal.

There s no new SIMD instructions, it's still 2x32 bit SIMD + 1x32 bit integer and the half hundred set of the original Gekko. They ve added L1/L2 and triple the cores, wich is not a miracle on a 45nm process, the cpu remains a very small piece of silicon. It's a short pipeline processor, wich limits it's frequency (less than twice the Broadway). It's a mere 15 GFLOPS cpu, about ten times less powerfull than Cell/Xenon, decent in general purpose, against only one core of the Xenon or the Cell's PPE, it'still weaker. When dev said it was horrible, it wasn't trolling.

And It's so much more of the same, that it is totally retro compatible with the Gekko (GC) and the broadway (Wii)....

 

About the gpu, it's still 8 ROPs / 16 TMUs with very limited main bandwidth at 12.8 GB/s, you can't expect much from that, nor aiming for any kind of serious compute pipeline.