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Thread: Motherboard system and northbridge temps don't update

  1. #1
    Xtreme Member
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    Jan 2009
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    Motherboard system and northbridge temps don't update

    Speedfan, hwmonitor, and hwinfo, don't show correct system and NB temps.

    On a fresh boot (from the system off state), the temps show -128C in these programs. When I reboot, then it correctly shows the temps as they are during the boot. But they don't update again unless I reboot the system.

    Anyone else have the same issue or know a fix for this?

    BTW, this may somehow be related to IT8720F because the voltages in the software are not updating too. CPU-Z used to show lower voltages as my clocks were throttled back for EIST. Now the voltage is constant.

  2. #2
    Technician PiLsY's Avatar
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    Switch to the backup bios and see if it still happens... Odd one that dude!

  3. #3
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    Jan 2009
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    I just found out a pretty strange bug. I can't see how this was put in on purpose.

    When I set the cpu fan in the bios to smart fan, then the northbridge temp, motherboard temp, cpu vcore, and some other voltages get regularly updated in windows.

    When I set the cpu fan to "By Duty -Cycle" at 50%, then the northbridge temp, motherboard temp, cpu vcore, and some other voltages don't get regularly updated in windows. It's the issue I explained in the OP. Note: The CPU temp is always updated in both scenarios.

    I'm running the P11 bios. Haven't tried my backup bios (P06) because I'm running a video card with 2 gb of ram. I recall there was a problem with booting the board with video cards with more than 1 gb of ram.

    Can you guys confirm the same problem on P11 bios and/or on other bios versions.

  4. #4
    Xtreme Member
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    The strangeness continues.

    When I set the cpu fan duty cycle at 50, 55, 60 %, then the stats I mentioned before don't get updated.

    But when I set the cpu fan duty cycle to 65% or 90% (haven't tested between 65 and 90), then the stats get updated. My hunch is that it does get updated at any value above 65%.


    NOTE: This is probably related. No matter what percentage you set in the fan duty cycle in the bios, the program will always select cpu for 63%, nb for 50% and system for 50% after you exit the bios and enter windows. When you start up speedfan, these are the speeds it shows and speedfan only reads the initial speed readings. This is probablly a fail-safe noob thing they implemented in case some noobs set the cpu fan too low.

    So the bios probably reads the fan at 40% and goes into alert mode and overrides the fan settings and sets cpu fan to 63% and also goes overboard and doesn't update the settings I mentioned in the OP. But when the cpu fan in the bios is set to 65% or higher, it probably doesn't trigger the fail-safe and the settings do get updated.

    Just FYI because I think support for this board is dead.

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