The problem is however is that over-time a fabrication process matures, it becomes cheaper to produce.
Another side effect is they have a better understanding of a nodes particular electrical properties. (I.E. Leakage and such.)
Which can assist in lowering power consumption and thus TDP.
Converesly something built at 40nm can actually be a larger chip than something built at 45nm even with the same transister counts as different fabs have different transister densities and as a process matures they can more densley pack transisters. (However, nothing on the same level as what an entirely smaller process can provide.)
Thus a 45nm processor built today could have far more transisters than one built a few years ago at 45nm and still use less power and taking up the same amount of space.
This makes comparing different generations of processors even built on the same process a very difficult affair in the best of circumstances.
medellingamer said:
160 shader units seems a little more reasonable since we now know it's on a larger process than the 40nm TSMC parts we were using to compare. I'm sure some can still argue otherwise, but I've personally seen enough to convince me that those numbers are accurate.
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It could be anywhere between 160 - 320 shaders.
There are 8 logic blocks or SPU's with the WiiU's latte, now if we look at AMD's other VLIW based architectures...
For VLIW5 there are usually 20-40 ALU's per block. (This is taking into account all of AMD's VLIW GPU designs.)
If it was based upon VLIW4 (Unlikely!) then there is the potential for 32 ALU's.
Thus 8*20 = 160.
And 8*40 = 320.
And 8*32 = 256.
There is still far to much "unknown" when it comes to the WiiU's hardware to give any kind of definitive answer.