How to Change Graphics Card Bus Settings

Written by kristopher riggs
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How to Change Graphics Card Bus Settings
Be careful, as changing the bus setting of a graphics card may void its warranty. (Technology - Graphics Card image by Rob Hill from

Changing the bus settings for a graphics card is a way to control the throttle of the card. By increasing the bus setting, the card can effectively be overclocked, running faster than the stock speed. Lowering the bus setting will decrease the performance of the card, but may improve stability. Some motherboards cannot support the change of the bus setting through the BIOS, requiring third-party software. Changing the bus setting can sometimes void the warranty of the graphics card, so proceed at your own risk.

Skill level:


  1. 1

    Power off the computer by performing a shut down. Allow the computer to sit for 10 seconds before powering back on. Press the correct key to enter BIOS, typically "F1," "F12" or "Del."

  2. 2

    Enter the advanced BIOS settings. Look for PCI-E frequency settings and increase or decrease the settings. Ensure that the frequency setting is only changed at 1-mhz intervals at a time and no more than 10-mhz in total to prevent damage to the card. Boot up the computer after each change and run a graphic-intensive program to ensure stability.

  3. 3

    Enter the advanced BIOS settings and search for GPU memory BIOS settings. Increase or decrease the settings by 5-mhz intervals, then save and exit the BIOS. Boot up the computer after the change and ensure the computer runs stable.

Tips and warnings

  • After each change to the graphics card in BIOS, be sure to boot up the computer and run a graphic-intensive program to ensure the settings are stable. If the setting causes the computer to hang or restart, change the settings back to last working setting.
  • Changing the bus settings on a graphics card can result in permanent damage to both the graphics card and motherboard if not performed properly. Ensure the settings are changed at low megahertz intervals to reduce the risk of damage to computer components.

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