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    Obtaining accurate temperature measurements?

    Discussion in 'Lenovo' started by hgjcvblk, Dec 30, 2009.

  1. hgjcvblk

    hgjcvblk Notebook Geek

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    Hello all

    Just wondering what programs everyone uses to monitor temperatures of CPU, GPU, etc. I recently started using TPFanControl to change the fan speed whenever the computer feels hot and noticed the temperature readings are significantly different from another program I use - HWMonitor.

    For example, right now the GPU reads 42 deg C on TPFanControl, while it says 54 deg C on HWMonitor. CPU reads 45 deg C on TPFanControl, and 37 deg C on HWMonitor. Which program do you all find is more accurate? Thanks everyone
     
    hgjcvblk, Dec 30, 2009
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  2. cn_habs

    cn_habs Notebook Deity

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    RMClock and HWMonitor give me the same cpu temps whereas TPFancontrol's temp is way higher. The latter only makes my T61 hotter...
     
    cn_habs, Dec 30, 2009
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  3. hgjcvblk

    hgjcvblk Notebook Geek

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    Thanks for the input. TPFanControl has worked wonders as far as cooling down my system, not sure why it's making yours hotter. I normally set the manual fan control to 1 or 2 when the left palm rest is hot and the fans cool down this area significantly (so much that I can feel a big difference).
     
    hgjcvblk, Dec 30, 2009
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  4. Mr.KL

    Mr.KL Notebook Evangelist

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    What about GPU-Z?
     
    Mr.KL, Dec 31, 2009
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  5. hceuterpe

    hceuterpe Notebook Evangelist

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    My favorite is my inadequately configured lmsensors on a new Linux install on an older CPU that read 3 degrees C for my CPU. Yay! Alas it was for a different temp or just calculated way wrong.
    These FAQs entries seem to confirm something similar:

    Q: I have a gpu always hotter than cpu. How can I change TPFanControl.ini to have fan level 1 from cpu 55 degr. and from gpu 75 degr. ??
    A: As TPFanControl calculates highest temperature (="Switch" = real temperatures minus SensorOffset degrees), so edit TPFanControl.ini and have set: SensorOffset4=20 (Sensor No. 4 is the common gpu sensor) Icon shows "Switch" temperature and name of fan controlling sensor, real temps are displayed in main window with ShowBiasedTemps=0 in TPFanControl.ini, or calculated temps are displayed in main window and icon with ShowBiasedTemps=1.
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    Q: What to do to ignore a sensor i.e. sensor no. 5 named "bat" (constant on 50 degrees Celsius in some T61) ??
    A: As there is another sensor also named "bat" you have to rename sensor no. 5 as i.e. "xyz" (any unique name) by setting in TPFanControl.ini: SensorName5=xyz. To ignore sensor no. 5 now renamed to xyz just write to TPFanControl.ini IgnoreSensors=xyz. Temperature of ignored sensors are shown in window, but not in icon, as there are of no influence on calculation of fan switching temperature.

    From the TP control fan's website.
     
    hceuterpe, Dec 31, 2009
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  6. hgjcvblk

    hgjcvblk Notebook Geek

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    GPU-Z shows a temperature reading close to what HWMonitor shows (maybe 1-2 deg C difference). For example, right now HWMonitor and GPU-Z show my GPU temperature at 65 and 66 deg C, while TPFanControl is at 53 deg C.

    I guess looking through all this, HWMonitor sounds like the program to use as far as temperature monitoring goes.
     
    hgjcvblk, Dec 31, 2009
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  7. cn_habs

    cn_habs Notebook Deity

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    The cpu temp shown by TPFancontrol is usually 15C higher than the one given my RMClock.... If I turn the former on with its default settings, the fan will be quiet yet I could feel the temp rising near the fan..
     
    cn_habs, Dec 31, 2009
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