Speedup Windows XP By 15% Using Longhorn’s Enablesuperfetch

August 25th, 2005 • Related • Filed Under

Filed Under: Internet News

Tags: Modding, PC Modding, PC Tips, Vista, XP

One of the many claims Microsoft makes for Windows Longhorn/Vista is that it will launch applications 15% faster than Windows XP does currently. This is down to improvements in the Prefetch functionality.Well, there’s no need to wait until Longhorn arrives; this improvement is already in Windows XP thanks to Service Pack 2. It just needs to be turned on.

To enable super prefetch:

• Use a registry editing tool to navigate to the following key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Session Manager\Memory Management\PrefetchParameters

• Insert a value with the following details:

Data Type: DWORD

Value Name: EnableSuperfetch

Value: 1

If you are not comfortable editing your registry then please do not do this!

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About the Author

Everton is based in London and has worked in the internet and mobile space for over ten years now, and before that worked in corporate strategy and consulting. He has a degree in Economics from Cambridge University, and currently runs the Portal and online operations for one of the largest ISPs in the UK. He also writes for Windows 7 News.

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There Are 9 Responses So Far. »

1. #1

   Comment by Is there a PC Doctor in the house? on 25 August 2005:

   There are a lot of sites out there suggesting that you can get better performance (up to 15%!) by making a small registry tweak to Windows XP. The tweak detailed is this one:
   - Use a registry editing tool to navigate to the following key:
   HKEY_LOC…
2. #2

   Comment by Anonymous on 25 August 2005:

   very nice!
3. #3

   Comment by Anonymous on 25 August 2005:

   My machine now crashed and fails to boot!!!
4. #4

   Comment by Anonymous on 25 August 2005:

   funny that you managed to make a post about it… anyhow, i've done it and my machine boots fine, but i dont notice a difference in application speed however. seems safe to do though, no problems here.
5. #5

   Comment by Anonymous on 25 August 2005:

   i tried the change almost a month ago when i first saw this and noticed NO CHANGE at all.
6. #6

   Comment by Anonymous on 25 August 2005:

   I tried it. Office and Outlook no longer launch, but other than that, no problems. Wouldn't recommend it.
7. #7

   Comment by Anonymous on 25 August 2005:

   My machine is ok with the change, but NO SPEED increase. Don't waste your time.
8. #8

   Comment by Mastertech on 24 September 2005:

   This does NOTHING, This is “tweak” is a MYTH: XP Myths
   Please stop spreading this crap around.

   This myth was started when the Inquirer irresponsibly ran a bogus letter without doing any fact checking. Windows internals guru Mark Russinovich said this won't work, the “Superfetch” string isn't even in the Windows XP kernel. You can confirm this yourself by checking with the strings.exe utility. This makes it impossible for it to do anything since no “Superfetch” command exists. Windows cannot execute a nonexistent command and will simply ignore it. Anyone who says this works is not only lying but a fool.
9. #9
   

   Comment by fgaffa on 26 September 2007:

   edit “enableprefetcher=8″,pc very fast!

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