Solved Do I need sysutils/devcpu-data for AMD FX 8370 CPU?

Well the only reason I would think this would be needed is if you had a buggy CPU.
Microcode updates fix small problems with the CPU.
I have never heard of anyone recommending it, but I can't see where it would hurt.

From a security standpoint it might present a way for an intruder to mess with your CPU's microcode.

Here is an example of where a microcode update should be used:
https://forums.freebsd.org/threads/61414/

That said I use v5 Skylake Xeon and have never encountered that bug.
Sometimes the media hypes these edge case scenarios when in fact only a small group of people are affected.
 
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