vivster on 03 September 2020
| HoloDust said: From that video, Battlefield1 uses 50%, while Witcher 3 uses only 17-18% of INT math (compared to FP). So, using games form that chart, in worst case scenario. 3080 is actually 22.5TFLOPS FP32 card, in best case scenario it's around 27TFLOPS...and of course, theoretically, it's 30TFLOPS FP32 card if no INT is used. I guess that architecture actually makes a lot of sense, cost and effective wise, depending on the balance of FP vs INT math. |
I'm not a chip designer so for me the biggest question is why do it like that and not "just" introduce a 3rd datapath to be able to use all cores simultaneously. It would undoubtedly make the chip more complex and engines and interconnects would need to be adjusted, but is that the big issue? Is there a mechanical issue to it? Is it a cost saving measure? Are whatever controllers not able to handle more than 2 paths?
Considering they are huge chips they probably did not have the real estate to just double both kinds of cores, so they just increased the important ones.
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