Can you come up with a good reason to not use the Volta SM going forward in gaming GPU?
I’m not aware of anything in Volta that is different from Pascal in terms of feeding the SMs (geometry handling etc.)
So as long as the new SMs don’t regress in anything compared to the new ones, I don’t see why Nvidia would choose Pascal.
The new SMs seem to be similar in terms of area (if you ignore the extraneous stuff), they are more power efficient, they have much better caches, they are so much better for integer stuff, and the clocks are in the same ballpark as well as long as it doesn’t get throttled due to power limits, which could be explained by the leakage of large, idle FP64 and tensor cores.
So just strip the FP64 units, replace the FP16 tensor cores by INT, remove whatever ECC stuff is in there, and done!
I think the only question would be whether it makes sense to use 64 CUDA cores per SM (like P100 and V100) or 128 CUDA cores per SM (like every other Maxwell/Pascal GPU).
I am sure the Quadro GP100 was tested by some people with games, anyone with a better memory remember where?
Maybe worth revisiting that to see if there is a correlation with regards to the CUDA core/SM ratio and whether it is potentially detrimental to some games; sure I heard that it may not be ideal, and we see quite a few games not reaching right performance scaling even outside of ROPs while a few others do reach what should be expected 30-40% improvement.
Apart from that like you I would expect Volta to be next gaming arch minus Tensor/FP64, albeit possibly with a differentiated name outside of the flagship mixed-precision-Tensor GPU.
Jonah Alben has mentioned Volta architecture generally works well with games.
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