So I’m looking into Threadripper pro systems, which can offer a pretty good memory bandwidth as they are 8 channel, and can have a huge amount of RAM. (I can put a 3090 or two in there too.)

I’m wondering how much the core count is going to affect performance. For example, the 5955WX has 16 cores while the 5995WX has 64 cores. They can both use the same memory though. There’s little point spending extra if the limiting factor will be somewhere else.