For instance, old Macs powered by PowerPC CPUs cannot run OS intended for Intel-based computers.

Not all Macs can be upgraded to the latest OS version. To find out which macOS is currently running on your Mac, follow these steps: Also, older Macs would benefit if upgraded at least to macOS Sierra for which Apple still releases security patches. However, for users that need to run 32-bit apps on Mac, the best macOS is Mojave. The best Mac OS version is the one that your Mac is eligible to upgrade to. While everything below is just my opinion, as a long-time Mac user and veteran software engineer, I hope my opinion worth something. Since the mission of this blog is to refute myths and legends around Macs, it’s time for me to provide my 2 cents about the issue on hand. Which Mac operating system is the best is a topic of numerous debates among Apple fans.