As for Desktop vs Laptop, that is relevant too. Desktops are typically much faster than Laptops because they are allowed much larger power envelopes, which leads to more cores and higher clock speeds for sustained periods of time. However, there is always a question as to whether your use case will be able to use all 16/32 cores/threads in a 9950X CPU. If not, you may not notice much difference with a smaller processor.
Source for CPU benchmarks: https://www.cpubenchmark.net/compare/6211vs5031vs3862vs5717/...
I tried a bunch of Linux Distributions and FreeBSD before mostly settling on MacOS, but never actually got around to running it.
Glad to see OpenBSD is still being actively developed.