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Thread: iMac Memory

  1. #1
    iMac Memory

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    Your Mac's Specs
    iMac 21.5" 2.7GHz Intel Core i5 8GB 1600MHz DDR3 NVIDIA GeForce GT 640M 512MB Mojave 10.14.3
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    iMac Memory
    In activity Monitor on my iMac the following is displayed. Physical Memory: 8.00GB, Memory Used: 4.16GB, Cached Files: 3.80GB. Or another time it might be Memory Used: 5.25GB, Cached Files: 2.73GB. I noticed that the two figures added together don't appear to exceed the 8.00GB total memory capacity. So does that mean that the two figures added together are using up virtually all of my 8.00GB memory capacity? If the answer is yes, do I need more memory?

  2. #2
    iMac Memory
    Raz0rEdge's Avatar
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    Jul 17, 2009
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    The Memory Used is all you should be looking at in relation to your system memory, the cached and swap are different. For the Memory Used, the three pieces App, Wired and Compressed will add up to whatever value you have. The key one is Wired, if that is very high, then you have applications that are hogging memory and that will have an adverse reaction on other apps. App Memory is reusable memory that can shared by all the apps and Compressed is whatever memory has been compressed because it hasn't been used for a while but, for some reason, needs to be accessible in memory.

    My machine has 16GB of memory and Memory Used is 11.86, of which only 2.79GB is Wired. So I am not running to the memory ceiling.
    --
    Regards
    ...Ashwin


  3. #3
    iMac Memory

    Member Since
    Jan 11, 2015
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    United Kingdom
    Posts
    73
    Your Mac's Specs
    iMac 21.5" 2.7GHz Intel Core i5 8GB 1600MHz DDR3 NVIDIA GeForce GT 640M 512MB Mojave 10.14.3
    Rep Power
    5
    Raz0rEdge thank you for the explanation.

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