Your Air Can’t Keep up with Your Software Anymore
This is the big sign to watch for. MacBook Airs are great little machines, but they aren’t exactly powerful. The Pros, meanwhile, offer a much more powerful 8th gen quad-core chip (for the 13-inch base model) and 9th-gen 6-core chip (15-inch base), along with the ability to upgrade to up to 32GB of RAM and 4TB of storage on the 15-inch model
That’s a very significant power boost compared to the Air, and you’ll probably know when you need it. If you need to regularly run demanding software or keep a lot of apps open at once, you may find that your Air is struggling, slowing down or freezing entirely. These are good signs that a Pro is now the best fit for your life.