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    on the D900F how do i initiate the CPU turbo boost ???

    Discussion in 'Sager and Clevo' started by Sparky894, Sep 26, 2009.

  1. Sparky894

    Sparky894 Notebook Evangelist

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    on the D900F how do i initiate the CPU turbo boost ???

    :confused:
     
    Sparky894, Sep 26, 2009
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  2. Quicklite

    Quicklite Notebook Deity

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    Em... there is a bio option to disable it.

    It should be on by default, turbo boost for the first gen desktop CPU weren't that dramatic AFAIK, so it probably is already on?

    But if there is no bios option, and no native support - there would be little you could do. Maybe some apps shipped with X58 MB might have similar on/off function, dunno though.
     
    Quicklite, Sep 26, 2009
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  3. mimarsinan

    mimarsinan Notebook Consultant

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    Could anybody with the D900F and a non-XP BIOS confirm that a BIOS option exists in the Vista/7 BIOS explicitly for toggling Turbo Boost?

    Such an option is unavailable in the XP BIOS and as far as I can tell, Turbo Boost is disabled on D900F under XP/2003.
     
    mimarsinan, Sep 26, 2009
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  4. ReDuNZL

    ReDuNZL Notebook Evangelist

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    It is nothing you turn on or off, to my knowledge - it is just there, inherit in the i7. It manipulates the core multiplier if and when it is needed, and if the right conditions are present. A Core i7 920 (2.66 Ghz) can thus go from a core clock of 2.66 Ghz to a max clock of 3.2 Ghz. Or lower than 2.66 Ghz. It can happen in just 1 core, or in any number of them simultaneously, I believe. I certainly do not have anything to do with "turbo boost" in my BIOS.

    I do not know if there is any difference in a XP BIOS ... but if you download and run CPU-Z, you can see the current multiplier and core speed real time.
     
    ReDuNZL, Sep 26, 2009
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  5. IntelUser

    IntelUser Notebook Deity

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    The Turbo Mode Boost on i7 920 is only 133MHz/266MHz for 4 cores/3/2/1 cores BTW. Only the Lynnfield based i7 750 can do 3.2GHz but only at single core.
     
    IntelUser, Sep 27, 2009
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  6. ReDuNZL

    ReDuNZL Notebook Evangelist

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    You are right. 2.93 is the max on a 920. Done a bit more reading.

    I have also found out that some BIOS'es could have a "off"/"on"/"always on" feature for turbo boost - but if it's not, turbo boost should be in the "on" state.
     
    ReDuNZL, Sep 27, 2009
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  7. D2 Ultima

    D2 Ultima Livestreaming Master

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    Super Pi set to one core affinity finishes in the same times as if I set to 4 cores affinity or no affinity (all 8 cores). Turbo boost is most likely there already, there is no BIOS option for it, and I've not seen any option for it in Windows so far.
     
    D2 Ultima, Sep 27, 2009
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  8. mimarsinan

    mimarsinan Notebook Consultant

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    @ReDuNZL: Using CPUz, I see absolutely no change in clock speed over the stock 3.33 GHz of the i7-975 processor. I also tried their new tool TMonitor, and this too, regretfully, confirmed my findings.

    @D2 Ultima: SuperPi is a single threaded tool. As such setting thread affinity will have no effect (other than letting the OS juggle the main application thread across CPU cores, which will probably improve performance marginally - but not due to multi-threading). If you want a multi-threaded benchmark, you can try wPrime as this will stress all your cores, spawning one thread per each core (including HT cores).
     
    mimarsinan, Sep 27, 2009
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  9. ReDuNZL

    ReDuNZL Notebook Evangelist

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    Maybe this can help http://www.hardforums.com/showthread.php?t=1417780
    Apparently, CPU-Z is not a reliable tool in this particular case - but still, on my machine I can see the multiplier throttling happening all the time... from 20 (2.66 Ghz) down to 14 and up to 22. Vista 64 and the BIOS that came with the machine.
     
    ReDuNZL, Sep 27, 2009
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  10. mimarsinan

    mimarsinan Notebook Consultant

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    I think its working for you. TMonitor is built by the CPUz people explicitly to observe i7 Turbo Boost functionality and it takes like 20 samples per second, so its pretty accurate. Unfortunately, for the XP BIOS, no Turbo Boost occurs.

    Does anybody here know whether Clevo's going to fix this? Its pretty sad. :'(
     
    mimarsinan, Sep 28, 2009
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  11. VeEuzUKY

    VeEuzUKY Notebook Consultant

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    Never. When they have a fix, it will be a new laptop so they can sell more units.
     
    VeEuzUKY, Sep 28, 2009
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