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    are my studio 15 temps too high?

    Discussion in 'Dell' started by CoolnessItself, Apr 29, 2010.

  1. CoolnessItself

    CoolnessItself Newbie

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    I had a restart due to a kernel power temperature for acpi/tz01 just now. Here are my temps. I'm running a math-intensive simulation, but nothing else.

    ACPI TZ00 - 27C/80F
    ACPI TZ01 - 81C/177F

    Intel i7 core0 - 72C/170F
    core1 - 70c/ 156F
    core2 - 78C/172f
    core3 - 72c/161F

    gpu - 61C/140F

    assembly - 42C/107F
    airflow - 42C/107F


    I'm running on AC power. Haven't modified the system at all. It's about a month old. (note that my C/F might be off by a few-I looked at one, typed, then the other, and they changed)
    Is this normal? What is TZ01? Some places say it's mobo, others say cpu
     
  2. unclewebb

    unclewebb ThrottleStop Author

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    The only important temperature is your core temperature. Intel built the Core i7-720QM to start throttling and to slow down when it reaches 100C. The Intel thermal shutdown temperature isn't until 125C. Intel sets these sky high limits because they know their chips inside out and they know that they can run at up to 100C reliably.

    There's no reason in the world for your computer to shut down or re-boot at the temperature that it reached. Contact Dell and ask them why this laptop is shutting down at such a low temperature.

    Here's a link to the Intel spec for a Core i7-720QM which clearly shows that the thermal specification is 100C and not 75C. The 820 and 920 are exactly the same.

    http://processorfinder.intel.com/details.aspx?sSpec=SLBLY
     
  3. CoolnessItself

    CoolnessItself Newbie

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    Thanks unclewebb

    So this has now happened several times. Each time, the cause is ACPI/TZ01, and each time, the parameter "_CRT = 358K", so I'm guessing 85C/184F is the shutdown for TZ01.

    The cpu temps seem ok, way under specs.
    I'll contact them (thought the multiple levels of IT support at my institution so I'm hoping for a quick fix here), but does anyone know what the TZ01 is or how to find out so I can explain the problem to IT more fully?

    ps I updated my bios, no change.
     
  4. unclewebb

    unclewebb ThrottleStop Author

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    Here's what Google has to say:

    358 kelvin = 84.85 degrees Celsius

    I've never seen computer temperatures listed in Kelvin but I assume that's what 358K means.

    It's shutting down way too soon but if Dell wants to have their computers shut down at this temperature then there might not be much you can do about this besides buy a different brand next time.