What is SuperFetch Service on Windows 10 and Should You Disable It?

Today we will take a closer look on what’s the purposes of SuperFetch service on Windows 10 and what to do if this system component causing high CPU load.

What is SuperFetch?

For the first time the SuperFetch service appeared in Windows Vista. There’s a lack of details about the service, but according to Microsoft short description it maintains and improves the system performance.

SuperFetch works in the background and analyze memory usage patterns to identify and mark frequently used applications. After that SuperFetch can improve the performance by pre-loading parts of frequently used applications into memory (due to this, apps should load in a faster way).

By default, SuperFetch uses all free memory of the machine when pre-loading apps. But as soon as the system will need more memory, the SuperFetch will free up the needed RAM.

superfetch windows 10

Tip. Due to the very fast access time on SSD devices, it is not necessary to keep SuperFetch enabled on computers which are using Solid State Drive technology.

What to Do When SuperFetch Causing High Disk Usage on Windows 10?

On most of the modern computers the SuperFetch service won’t make any problems: in most of the cases the user won’t even notice that it’s running. Most likely, this service is being run on your machine just right now too!

But sometimes the SuperFetch can start to cause the different problems:

  • Usually SuperFetch works in the background and uses a little piece of computer’s resources. But sometimes users facing situation when the service starts highly load the CPU or cause a high disk usage;
  • Your Windows boot happens in a slower way than usually (that’s happening due to the fact that the SuperFetch preloading data from hard disk to memory). In case your disk is 100% used for few minutes after each Windows boot – most likely, the cause of the problem is in the SuperFetch service;
  • SuperFetch can cause overall decrease of the machine’s performance when gaming (most often this is happening on 4 GB RAM computers).
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Should You Disable the SuperFetch on Windows 10?

In case your computer functioning correctly and you are not noticing any high CPU load problem – then you don’t need to disable SuperFetch (be sure that you won’t notice any PC performance changes).

We recommend you to disable system components only in case of the real need (if you are facing some issues, errors, etc.). If the solution below won’t help – don’t forget to enable the process again.

How to Disable SuperFetch Service?

You can disable SuperFetch service using few methods, let’s discuss them below.

Important! In order to perform these instructions, you will need an account with administrative privileges.

  1. Press Win + R, type in and run services.msc;
  2. Find service SuperFetch in the list and double click on it;
    windows superfetch
  3. In new window stop the process by pressing button Stop. After that change its startup type to Disabled by choosing the option from drop-down menu;
    disable superfetch
  4. Click Apply and OK;
  5. Reboot your computer and check if the problem with high resources usage still persists. In case everything works in the same way – most likely, the problem is caused not by SuperFetch, so you can enable it back and look for some other solution;
  6. In order to enable the service, go to Services > find the SuperFetch in the list > double click on it;
  7. Press Start, and choose Automatic from drop-down menu near Startup type field;
  8. Press ОK and close all windows;

How to Disable SuperFetch Using Regedit?

In case solution above didn’t help you to disable SuperFetch, you should try to use Regedit:

  1. Press Win + R, type in and run regedit;
  2. Go to branch HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\PrefetchParameters;
  3. In the right area of Registry Editor, you will find parameter EnableSuperfetch. Double click on it and change its value to . In case there is no parameter, you need to create a new one (right click on empty area, then New > Create DWORD (32-bit) Value. Give it a name EnableSuperfetch and set the value to ;
    disable superfetch windows
  4. After disabling the service, reboot your computer and check if the problem with SuperFetch and high disk or CPU usage still persists.
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