I know this has been posted before, but I just managed to use this on my daughter's inherited MacBook air from 2014, and was able to get MacOS Ventura working seamlessly on it. This was important for me because the previous version of MacOS she was stuck on didn't allow the use of shared iCloud storage, so I couldn't sync her Photos library with the Optimize Storage option and free up disk space (it "only" has a 120GB hard drive). Once I'd updated I was able to do that and lengthen the life of her laptop by quite a bit - it's getting on for ten years old now.
How well does it perform? I have a MacBook Air 2013 that I run Arch on but I miss all the apple ecosystem stuff. I can’t imagine it runs as well as Linux which runs great.
It's pretty seamless. There are occasional small lags when starting apps, and the fans do spin up when playing Minecraft Java edition and there are lots of creatures nearby (we also had to kill off a bunch to stop it lagging really badly when there were something like 200 creatures of a type that follow you about), but it feels like it's got a good few years in it yet. Apple apps like Photos and Mail etc feel pretty responsive. For reference the Air has a 1.4GHz Dul-Core Intel Core i5, 4GB of 1600 MHz DDR3 RAM and Intel HD Graphics 5000 1536MB. I've got an M1 Max Macbook Pro with 64GB of memory, so it's up against some tough competition!
Works pretty well for me on a 2012 Mac mini. It’s maxed out though with i7 and 16GB. I don’t feel performances are worst than with the latest official macOS version.
