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(11-19-2012, 03:42 PM)

Originally Posted by USC-fan


r700 based at 40nm

We have performance per watt figures for a r700 base gpu at 40nm.

4770 at 40nm is 12 glfops per watt is 137 mm˛ die with 826m
edram takes up at least 37 mm˛ and the wiiu gpu is 156 mm˛.

That leaves at most 100-110 mm˛ for the gpu. Since you have other thing on the die also.

So now we have the power number, gpu on 40nm process and still a r700 based. Man I called all of this....

If you used the whole 33 watts for just gpu you are looking at 396 gflops which is impossible.

More likely using 20-25w at most for gpu, so you have a range of 240 - 300 glfops. Xbox 360 and ps3 are 240-250 gflops.

My copy/paste from the anandtech thread

It wouldn't be R700, it is a modified version of this GPU family, with enhancements and architecture changes... more realistically you'd call it N800 (N= Nintendo modified, and not part of the R800 family, but parallel to it)

As a side note, R700 GFlops =! R500 GFlops, you can't really compare them in that manner...