"Apple released macOS 10.12 "Sierra" last week as the successor
to OS X El Capitan. Given this annual update to macOS / OS X, here are
benchmarks of macOS Sierra compared to Ubuntu 16.04 LTS on a MacBook Air
and Mac Mini computers."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips