Interesting outlier: Factorio and probably other games from this genre.

I usually upgrade my CPU just to prevent it from becoming a bottleneck (that's the official version, I very often buy technology for the sake of having cool new technology, who am I kidding). So a CPU upgrade hadn't been something that made a game "playable" for me since GPUs became a thing. But when I got my 7800X3D, that was the difference between having reached a limit with my Factorio megabase and being able to keep building it bigger!

Also, since the simulation in that game has to churn through a lot of data in every tick, it's also a rare case in general where RAM speeds have a visible effect.