Big Assumption: This leak actually is the PS5 4x more powerful != 4x TFLOPS - these benchmarks don't scale perfectly, indeed if PS4 got 5000 and 1080 gets 20000 we can see it scales really poorly. GTX 1080 == 8.8 TFLOPS and Nvidia have good IPC, likely still higher than Navi.
4x PS4 = 7.2 "GCN 1 TFLOPS" (and given Navi's 25% higher IPC, that's equivalent to 5.8 "Navi TFLOPS") So what we are seeing is a reality of PS5 having over 9 "Navi TFLOPS". Which makes me think that the PS5 dev box is just using a Zen CPU + Navi 10 / 5700 XT silicon for now, and might indicate not a lot about the final hardware.
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