So far in my testing, the 9800X3D is just a ripper in many cases. A game like Hogwarts Legacy and running through Hogsmeade at 4K with full RT, my 9800X3D and and 4070 Super beat out my 285K and RTX 4090. Of course I used DLSS Ultra Performance due to the 4070 Super being grossly under powered compared to the 4090. Even then, the 4070 Super was a limiting factor and maxing out at times. To me that is just wild. At times it was like 20-30% FASTER.
In other games, my 285K is faster, games like BF2042 are faster on the 285K from my testing. So it does depend on the game. There are some where the 9800X3D and it's cache are just unstoppable, no matter how much memory tuning or speed you have.
If you watched the interview the other day with Intel's Robert Hallock, he was asked about Intel bringing an X3D competitor, and his smug smirk and "Not at this time" comment kinda tell you everything. It's coming, and I wouldn't be surprised if it's sort of a surprise product. Maybe not a 200 series Ultra product, but I would be shocked if we don't see it next gen.