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Thread: overclocked cpu not showing the correct frequency on linux

  1. #1
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    Default overclocked cpu not showing the correct frequency on linux

    Hi,

    I have a ASRock NetTop ION 330 which I have overclocked to 2.00 Ghz by using the BIOS OC Tweaker utility but after rebooting the pc, fedora (f16) keeps reporting 1800 Mhz on /proc/cpuinfo.

    What do I need to do to have fedora to recognize the new cpu clock frequency?

    Thanks in advance

  2. #2
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    Default

    There's nothing you can do. The Linux kernel is unable to report the correct frequency. You have to live with the problem.

  3. #3
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    Thanks Real,

    But how can I then check the I'm actually running at the new frequency? if I reinstall reinstall the OS with the new BIOS clock frequency, am I going to have the OS reporting the new one?

  4. #4
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    Quote Originally Posted by mrgrieves View Post
    Thanks Real,

    But how can I then check the I'm actually running at the new frequency? if I reinstall reinstall the OS with the new BIOS clock frequency, am I going to have the OS reporting the new one?
    No, reinstalling will not do anything. I don't know how to validate OC settings in Linux. The only way I can do it here is to boot Windows and run CPU-Z.

  5. #5

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    Take a look at the bogomips.

    Code:
    $ cat /proc/cpuinfo
    cpu MHz		: 2500.000
    ...
    bogomips	: 5600.61
    ...
    This example is a dual-core processor overlocked to 2.8GHz (2x2800=5600 bogomips)

  6. #6
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    Quote Originally Posted by AnonymousCoward View Post
    Take a look at the bogomips.

    Code:
    $ cat /proc/cpuinfo
    cpu MHz		: 2500.000
    ...
    bogomips	: 5600.61
    ...
    This example is a dual-core processor overlocked to 2.8GHz (2x2800=5600 bogomips)
    That is not how bogomips work. They're per-CPU and don't have any special relation to frequency. I get four different bogimips values here on a quad core.

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