Msi afterburner voltage % ?

Discussion in 'MSI AfterBurner Overclock Application Discussion' started by pstlouis, Jun 16, 2016.

  1. pstlouis

    pstlouis Master Guru

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    GPU:
    GTX 1080Ti SC2 2038
    Is there one of you that know how the voltage % increase in afterburner represent in mv ?
     
  2. Unwinder

    Unwinder Moderator Staff Member

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    You cannot directly map GPU Boost 3.0 overvoltage % to millivolts. % maps to different offset in millivolts depending on the card and even on the same system and card 100% overvoltage value may be scaled down to lower offset in mv depending on thermal conditions.
    100% value is the difference between the maximum safe voltage (which is defined by BIOS) and GPU operating voltage (which depends on silicon and which is different for each card and defined by GPU leakage level (ASIC quality)). And as I said above maximum voltage can be also dynamically scaled down depending on thermal conditions.
    For example on my 1070 card operating voltage is about 1040mV and with GPU Boost 3.0 overvoltage set to 100% it can reach up to 1090mV.
    The best way to know your operating and maximum voltages would be setting power and thermal limits to maximum, setting fan speed to maximum to exclude 100% overvoltage downscaling, then running some not too heavy 3D application (which should NOT be power limited). This will cause GPU Boost 3.0 dynamic clock control to be limited by operating voltage (Voltage limit graph in monitoring window should report "1" in this case). Then you can set overvoltage to 100% and see how much voltage will be added.

    The following video demonstrates that:

    https://youtu.be/SAHWUt3zbGM
     
  3. pstlouis

    pstlouis Master Guru

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    GPU:
    GTX 1080Ti SC2 2038
    Good information on that new GPU boost 3.0.

    Thank you for the information and kept the good work on afterburner that is well appreciated. :thumbup:
     
  4. BAZOKA1942

    BAZOKA1942 Member Guru

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    GPU:
    sapphire r9 390
    hi
    in few days i wan buy gigabyte gtx 1060 Windforce OC so i would like to now if msi after burner beta 14 support overclocking with voltage increase in this card ?
    and if there is a tweak to make boost 3 let the gpu frequency kind locked automatically
     

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