Nothing sums up these multiple discussions in this forum – and elsewhere in the web – than this sentence.
If your base M1 Air runs fine with its 8GB of AM, then it runs fine. Why care about the memory swap if it doesn't influence the experience you have with your device? Apple Silicon is designed to work that way.
If it runs fine, who cares what Activity Monitor says? I never open it unless I've got a problem.
So long as I'm not seeing beachballs or big pauses when I'm trying to work, I don't know or care how much swap space I'm using right now, or what color my "memory pressure" is.
You know, sometimes, I think that Activity Monitor was designed by Apple marketing versus Apple engineering.
Even though memory pressure can go into the yellow zone, and sometimes even the red zone, the subjective experience of using the machine is what matters to me most. I have an 8 GB machine and a 16 GB machine and for the most part they run almost identically when doing standard productivity type work with lots of tabs and apps open. if I push it, and open stupid numbers of apps and tabs, then I can get 8 GB machine to get a little choppy with its animations, but it still remains very responsive and workable.
Now, if I look at memory pressure all the time, I can see that both machines, depending on what I am doing, go into the yellow or even red. But I don't care as long as the machine stays responsive.
Now some people say that SSD wear becomes an issue if you are using lots of swap, due to memory pressure, going into the yellow or red. That may be true, but I doubt that the overall longevity of the machine will be affected by this. I saw a post on Reddit where someone was using a lot of swap and over the course of two years so just one percent degradation of their SSD. This just won't matter for most people in most situations. I do accept it as a theoretical risk, but I'm not going to lose any sleep over it personally and nor should most people. I have also never seen any posts here or Reddit or elsewhere on the Internet, where somebody has demonstrably worn out their SSD due to excessive swap. SSD failures seem pretty rare, overall, so even if we were to believe that the reason for their failure was lack of ram, the overall rate of failures anecdotally seems very low.
If we didn't have a yellow, red memory pressure indicator, then there would be a lot less anxiety about this and, going back to my original statement, that's why I think Activity Monitor is more useful to Apple's marketing department than its engineering department, because all of this concern about yellow or red memory pressure pushes people to buy more memory than they need. Going by the actual performance of the machines in actual use under normal circumstances (not some crazy benchmark torture test) these machines remain snappy and responsive in all but the most extreme situations.
I'm not saying that 16 GB isn't worth getting. If you have the $200 then spend it and sleep soundly. Just know that for many people it would be a complete waste of money because they wouldn't get any additional performance out of the machine for the extra expenditure. It certainly isn't needed for the majority of people today, so if you can't afford more than 8 GB, don't sweat it you will still have a fantastically, powerful and capable laptop.
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