What's the context of that graph? TPU seems a bit different for raster, for RT it would make a bit more sense.The more core you enable, you can make them run in a better perf per watt zone too, 4070 super had way more core enabled without using much more power, was about ~10% more efficient than the 4070, they have nowhere to go on the FE type of cooler but those giant AIB could probably take it, the 5070 seem to overclock well enough on those (~2.9ghz).
5070 has not much core room to growth before having watts issue, because of that 18GB vram angle, a full 5070super could be quite worthwhile, the 9070xt would not be necessarily much faster:
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That 13-15% gap with a 3.125ghz non-stock 9070xt to make up, give it 4.2% more cores, 2.7 ghz boost clock, that a ~12% faster 5070 super and that the usual AMD a bit faster than Nvidia for a bit cheaper price situation (supposing the 18gb 5070super end up costing more than the 9070xt, we can expect).... but this time around there not even with more VRAM going on if it is a 18GB.