I very recently upgraded and had considered both Raptor Lake and Zen 4 CPU options, ultimately going with the latter due to, among other considerations, the AVX

I very recently upgraded and had considered both Raptor Lake and Zen 4 CPU options, ultimately going with the latter due to, among other considerations, the AVX-512 support. Future proofing is no doubt a valid consideration, but some of these benefits are already here today. For example, in a recent Linux distro (using glibc?), attach a debugger to just about any process and break on something like memmove or memset in libc, and you can see some AVX-512 code paths will be taken if your CPU supports these instructions.