Yeah they usually have the most dramatic impact on games that have bad CPU optimization, which is a lot of them tbh
I think the 5700x3d is the first one they made, iirc it outperformed even the high end CPUs from the next generation in quite a few benchmarks, but probably not the 7000 gen. If you want to keep the possibility of upgrading, I would advise against the 5700x3d because that’s basically already the best for this socket. By all accounts it’s great value for its price though.
If this metal thingy is anything like the one used as dust covers inside PC cases it’ll just bend (I’ve actually tried to use one as a bottle opener).