SOLVED: Should Superfetch Be Disabled on Windows PC’s with Windows 8 or 8.1

No, under Windows 8 SSD’s and RAID’s are ignored by SuperFetch.  SuperFetch, under Windows 8 / 8.1 and newer will only run against spinning disk even though the service is running apparently on all disks… it is not working on SSD’s.

You might have wanted to disable the SuperFetch service in the Windows 7 days because of the price of RAM.  That is, RAM was more expensive than it is now and so you may not have had all you need.  Today, RAM is very cheap so if SuperFetch is using some of it, that is likely a very good thing.

In case you were not aware, SuperFetch is Microsoft’s proprietary service that algorithmically figures out what you are likely to need from your hard drive NEXT (i.e. in the near future BEFORE you click on anything) and loads it into memory thereby making the machine respond much faster.

View Comments

  • i have a quad core with 8Gb Ram. superfetch was still a problem for me. A lot of places say that disableing will give you a slower experience overall but i feel like that is better than a total freeze up every 10 -15 mins.

  • its depends upon the size of the ram you have
    my core 2 duo computer with 4gb ram runs fine with super fetch enabled , but my other computer with 2gb ram keeps on disk seeking and slows down the computer and it is much better with the super fetch off

  • Couldn't agree more... i tried everything to get rid of the 100% disk problem before disabling the superfetch service because people kept saying it shouldn't be an issue. It is an issue, all they way through windows 10 TP. Superfetch disabled and harmony restored.

  • I agree with Lee. Disabling superfectch completely has saved my Windows 8.1 experience. It was really slowing things down terribly, and with it disabled my computer is finally usable again. There must be unresolved bugs in superfetch, and it annoys me that so-called experts claim it is a myth that superfetch can harm performance.

  • Except that, on many computers, having superfetch enabled sucks up 100% of disk usage. Permanently, for some people, for long periods of time, for others. Just do any google search for "100% disk usage, windows 8 (or windows 8.1)." About half the time, or more, the solution is to disable superfetch. I just did it yesterday, and and it worked for me, and, at least so far, with no apparent harm emerging in other places.

    I suppose harm of some unknown type might emerge later. But, in the meantime, I will not have to endure the existing harm caused by my laptop being so slow as to be unfunctional for 5-20min at a pop.

Published by
Ian Matthews

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