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F42 Change Proposal: Optimized Binaries for the AMD64 / x86_64 Architecture (v2) (self-contained)
(discussion.fedoraproject.org)
Using this tool you can find out what x86_64 level you have!
https://github.com/HenrikBengtsson/x86-64-level
I am on v4, so v2 is the minimum.... even my 2012 Thinkpad is v3.
This is a pretty absurd proposal