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Overclocking X99 with Intel SpeedStep

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linuxwarz
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2015/01/27 18:19:45 (permalink)
Hi All,
 
On my old ASUS P9X79 Deluxe system, it allowed me to use intel speedstep while overclocking. I cant seem to get the EVGA x99 to do the same.
 
The goal is to go ~1GHz on system idle with lower voltages used and then full overclock when not idle.
 
Is this possible to do in the EVGA x99? What settings am I looking for?


Heatware: http://www.heatware.com/eval.php?id=67080
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    bcavnaugh
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    Re: Overclocking X99 with Intel SpeedStep 2015/01/27 21:47:31 (permalink)
    What CPU are you looking at.
    The i7-5960X supports Enhanced Intel SpeedStep® Technology.
    I would think that all the CPU would but you would need to read the spics for the CPU you are wanting to use.
    In the Bios look for EIST, it is Enabled by default. Enhanced Intel SpeedStep® Technology - How To Document
    I am booting up my X99 Classified now. You should be able to do the same as you have on your X79 Rig.
    post edited by bcavnaugh - 2015/01/27 22:10:07

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    Boxlid
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    Re: Overclocking X99 with Intel SpeedStep 2015/01/27 23:41:52 (permalink)
    linuxwarz
    Hi All,
     
    On my old ASUS P9X79 Deluxe system, it allowed me to use intel speedstep while overclocking. I cant seem to get the EVGA x99 to do the same.
     
    The goal is to go ~1GHz on system idle with lower voltages used and then full overclock when not idle.
     
    Is this possible to do in the EVGA x99? What settings am I looking for?


    Just leave speed step on, pretty sure it needs to be on since it enables max boost clock for each core.  You want to set the non-boost multiplier for target idle frequency.  Now just set power options in OS to balanced or let bios override OS.  Use HWinfo64 for monitoring everything, since some applications only report 3000MHz or your max boost clock.


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    linuxwarz
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    Re: Overclocking X99 with Intel SpeedStep 2015/01/28 05:12:32 (permalink)
    bcavnaugh
    What CPU are you looking at.
    The i7-5960X supports Enhanced Intel SpeedStep® Technology.



    I am using the i7-5960X.
     
    Boxlid
    Just leave speed step on, pretty sure it needs to be on since it enables max boost clock for each core.  You want to set the non-boost multiplier for target idle frequency.  Now just set power options in OS to balanced or let bios override OS.  Use HWinfo64 for monitoring everything, since some applications only report 3000MHz or your max boost clock.

     
    This is where I am hung up. On my x79, my system is set to "Performance" power settings and it clearly has it as 100% power as a minimum, yet it seems as though the CPU (i7-3930k) is still using speedstep to the fullest (1.1-4.6GHz). This is why I am asking about speedstep not working. I have set the x99 system to "Performance" with 100% power minimum and the BIOS settings all to AUTO (no overclock) and speedstep still works as expected.
     
    I am using CPU-Z to monitor operating frequency.
     
    Is there something I am missing in the BIOS or do I need to resort to using windows power settings to scale the frequency when the chip is being overclocked?


    Heatware: http://www.heatware.com/eval.php?id=67080
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    Boxlid
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    Re: Overclocking X99 with Intel SpeedStep 2015/01/28 09:32:07 (permalink)
    Cpuz doesnt work right, use HWinfo64 for all monitoring and follow the above for your bios. X99 works a little different


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