Change Your Bandwidth Reserve Setting

Want to speed up your connection speed on your computer?

Windows XP reserves about 20% of your bandwidth for Quality Of Service or QoS traffic. This type of traffic is not necessary at all times and you can utilize this 20% that Windows uses and re-route this extra bandwidth to your primary connection or services. Performing this tweak will yield a faster connection due to freeing up an extra 20% of bandwidth.

Registry Editing Warning: This article is for educational purposes. By using this information you agree to be bound by the disclaimer. Editing the registry may render your system unstable. Please take the proper precautions to backup your system before editing the registry. and the author will not be responsible for any damages. Use at own risk.

Registry editing steps for Changing the Bandwidth Reserve Setting:

  1. Open your registry editor by going to Start Menu > Run > type in regedit click OK.
  2. Find the path HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Psched
  3. Add the entry NonBestEffortLimit by right clicking an open area below the listed entries and then select NEW > DWORD value. Type in NonBestEffortLimit and press enter.
  4. Set the value of the NonBestEffortLimit entry to 0 by double clicking the NonBestEffortLimit entry and entering a 0 in the Value data field. Make sure the Decimal selection is made for the Base. Click OK.
  5. Close the Registry Editor and Restart Windows for the changes to take effect.

Tags: .
  • Dwainec

    More info. about this as to how this may help you.;EN-US;q316666

  • Cris D Putnam

    Correction of some incorrect claims about Windows XP QoS support
    There have been claims in various published technical articles and newsgroup postings that Windows XP always reserves 20 percent of the available bandwidth for QoS. These claims are incorrect. The information in the "Clarification about QoS in end computers that are Running Windows XP" section correctly describes the behavior of Windows XP systems.

    Article ID: 316666 - Last Review: October 31, 2006 - Revision: 4.3
    Windows XP Quality of Service (QoS) enhancements and behavior;EN-US;q316666