Windows 8 and 8.1 Forums


Upgraded to Windows 8, insane RAM cache.

  1. #1


    Posts : 5
    Windows 8 Pro N

    Upgraded to Windows 8, insane RAM cache.


    So, I recently upgraded to Windows 8. And I noticed I started having some issues with performance in games (stuttering, etc). My question was, is it normal for Windows to eventually cache all the RAM available? It started out at 1GB, then started creeping up and has never once gone down in size.

    Click image for larger version

    Any help would be appreciated, coming from Windows 7 using similar settings, I did not run into this problem.

      My System SpecsSystem Spec

  2. #2


    Posts : 224
    .


    sounds like you have a memory leak on one the programs running, possibly the game your having issues with.

    check with the games site and look for any updates to it as their may be some compatability issues with windows 8.

    and do that for all your applications that don't natively support windows 8.
      My System SpecsSystem Spec

  3. #3


    Posts : 5
    Windows 8 Pro N


    The RAM is cached though, not in use. I was mostly wondering if this is new in Windows 8. Cause I don't remember Windows 7 caching the majority of my RAM.

    This happens even though I do not use the program in question. It seems to just happen over time in Windows 8.
      My System SpecsSystem Spec

  4. #4


    To answer one of your questions: No, it is not normal for Win8 to cache all the RAM. I have 12GB installed, with 1GB allocated to the IGP (i3-3225, with no discrete graphics card), and Task Manager shows 10.2GB available, and only 2.5GB cached:

    Click image for larger version
      My System SpecsSystem Spec

  5. #5


    Posts : 5
    Windows 8 Pro N


    Quote Originally Posted by wpcoe View Post
    To answer one of your questions: No, it is not normal for Win8 to cache all the RAM. I have 12GB installed, with 1GB allocated to the IGP (i3-3225, with no discrete graphics card), and Task Manager shows 10.2GB available, and only 2.5GB cached:

    Click image for larger version
    Does it ever decrease in Cached RAM though, or does it seem to be fixed (i.e. once 2.5GB, it will never hit 2.4GB again).
      My System SpecsSystem Spec

  6. #6


    Hmmm. Not sure long-term, but in short-term, it looks like once it caches, it keeps it in cache. I just opened a bunch of apps, including running a HD video, and the cache crept up to 3.4GB. Closing all those apps, and going into Task Manager and closing all those annoying background processes from Google, Apple, Adobe, etc -- still have 3.4GB cached. Committed is back down to 1.4GB.

    Perhaps periodically -- a longer period than this short test I did -- Win8 will release some from the cache? <shrug>
      My System SpecsSystem Spec

  7. #7


    Posts : 179
    Windows 8.1 Pro x64 with Media Center


    I think the cached ram will keep increasing until you run a program that requires huge RAM. Then Windows should let go of some the cached RAM to make space for the program. If you don't want Windows 8 to cache large amount of RAM, just disable superfetch in the services.
      My System SpecsSystem Spec

  8. #8


    Posts : 5
    Windows 8 Pro N


    I disabled Superfetch, after 40 minutes of using the computer today, this:
    Click image for larger version
    I don't know but it doesn't seem like disabling it stopped it from caching tons of RAM for no reason.

    edit: It has now reached 9.1GB cached, with superfetch disabled. Never decreased, it doesn't make any sense.
    Last edited by dpAlex; 23 Dec 2012 at 11:31.
      My System SpecsSystem Spec

  9. #9


    Harrisonburg, Va.
    Posts : 10,488
    Windows 8.1.1 Pro with Media Center


    Maybe Disk cleanup in C:\ Properties?
    See screen shot:

    http://i45.tinypic.com/c5b2q.png

    Maybe Ccleaner?

    Download CCleaner 3.26.1888 - FileHippo.com
      My System SpecsSystem Spec

  10. #10


    Posts : 5
    Windows 8 Pro N


    Click image for larger version
    Click image for larger version
    Not sure how it's supposed to help. RAM cache is now at 7.8GB, so it is CAPABLE of decreasing.. it just doesn't do it nearly often enough.
      My System SpecsSystem Spec

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Upgraded to Windows 8, insane RAM cache.
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