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[ The PC Guide | Troubleshooting and Repair Guide | The Troubleshooting Expert | Troubleshooting Specific Components | Troubleshooting Hard Disk Drives | Performance Issues ]

I installed PCI IDE bus mastering and I notice little or no speed improvement (or performance decreased)

Explanation: In an attempt to improve performance on your system under Windows 95, you have installed bus mastering drivers. While the drivers work, there is no great performance improvement, as you may have been expecting.

Diagnosis: Join the club. As I've said elsewhere on this site, I find all the hoo-hah about bus mastering drivers totally amazing. Why they are so hyped up, considering that they have so many compatibility and installation problems and they provide so little real benefit for the average person, is totally beyond me. Oh well.


  • Don't worry about it. No performance improvement is quite common for many people running these drivers under Windows 95.
  • Changing the version of bus mastering drivers installed on your system may improve the performance in some cases. Make sure you are using a version designed for your particular chipset/motherboard. Consult the motherboard manufacturer's home page for more ideas.
  • Uninstall the drivers, especially if performance is decreasing or there are compatibility issues.

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