CPU Frequency Set in BIOS Does Not Match Frequency Reported by Win 7 RRS feed

  • Question

  • The CPU frequency set in the BIOS (3633) and the frequency reported by CPU-z (3633.3) does not match the frequency reported by the Windows Management Interface, Computer/Properties, and System Information (all are 3460). Until the last Microsoft update, the frequency reported by Computer/Properties was 3633, but now that figure had been made to match what is reported by the Windows Management Interface and System Information, which appears to be incorrect. Furthermore, QueryPerformanceFrequency reports a frequency of 3379, which is different than any other figure reported in the system. Where does the CPU frequency of 3460 come from? Why does it not match what is set in the BIOS and reported by CPU-z?  The operating system is Windows 7 professional.  The CPU is Intel Core i7 920.  All technologies, such as SpeedStep, that can change the CPU's frequency dynamically are disabled in the BIOS.

    Thursday, May 5, 2011 2:24 PM


  • Try a system restore to the former time before the update was installed if there's any issue.

    Meanwhile, it's hard to deside if the last update influnced the frequency. You can manually install it as a test.



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    • Marked as answer by Miya Yao Friday, May 13, 2011 8:46 AM
    Monday, May 9, 2011 5:57 AM