If above chart is correct.
In a nut shell.When a scene calls for G Box.Navi 21 will blaze thru it.Nvidia card will slow down.Nvidia appears to have upper hand in RT.
Reading AMD patents on this topic.Appears Big Navi or future AMD gpu will have a ability to redirect prioritys.
Let’s say Ampre has 20% of its hardware dedicated to RT. When RT is not needed it’s a waste of 20% rendering power.
Interesting read https://www.hardwaretimes.com/amd-big-navi-to-pack-80cus-5120-cores-20-cus-to-be-used-for-ray-tracing-20-tflops-of-fp32/amp/#referrer=https://www.google.com&_tf=From %1$s
They are quoting CyberPunkCat. Everyone else already debunked it. Its going to be implemented like xbox I believe where entire chip can dedicate resources to raytracing. Haven't heard tom CyberPunkCat for a while and this really seems like wrong info. Its going off a statement form AMD that it will be hybrid approach. Hybrid usually means combination of two things, so it is likely the entire chip I have no idea where cyberpunk made up the 20 CU number from Hybrid lol.