MacBook air 2018 memory usage

mtubul

macrumors newbie
Original poster
Apr 24, 2014
15
1
i have a new MacBook air 2018 with 8GB ram, A weird thing is going on, when i turn on the mac the memory usage is around 3.5 GB Ram without anything open in the background - nothing!!! After an hour or so the memory climbs up to around 6.5 GB - can someone please explain what is going on?
 

Biscotti

macrumors regular
Jun 25, 2008
133
11
i have a new MacBook air 2018 with 8GB ram, A weird thing is going on, when i turn on the mac the memory usage is around 3.5 GB Ram without anything open in the background - nothing!!! After an hour or so the memory climbs up to around 6.5 GB - can someone please explain what is going on?
MacOS will use as much RAM memory as possible. If you hypothetically had 32GB of RAM, it could use 8 gb for the OS instead of 3.5 gb. MacOS uses as much RAM as possible to make your experience smoother and more enjoyable. It’s a feature, don’t worry.
 

revmacian

macrumors 65816
Oct 20, 2018
1,036
836
USA
i have a new MacBook air 2018 with 8GB ram, A weird thing is going on, when i turn on the mac the memory usage is around 3.5 GB Ram without anything open in the background - nothing!!! After an hour or so the memory climbs up to around 6.5 GB - can someone please explain what is going on?
macOS is based on BSD (Darwin), and in the *nix world "unused RAM is wasted RAM", as Biscotti has mentioned. The system will take care of memory usage.. nothing to worry about.
 
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mtubul

macrumors newbie
Original poster
Apr 24, 2014
15
1
Oh ok guys, that solves a lot of things now, thank you for answering!
 

auxbuss

macrumors regular
Feb 18, 2014
167
135
UK
Sounds strange to me. I've been using mine all day – 10 hours or so – and Memory Used is 3.8GB atm (1.8 App + 2.0 Cached).

Easiest way to check usage is via Activity Monitor/Memory.