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    Why are there such discrepencies in CPU temperature readings?

    >Both active and passive cooling is triggered to BIOS< See: Windows 98 Does Not Support ACPI Passive Cooling Mode "Windows 98 does not provide support for Passive Cooling Mode as described in the Advanced Configuration and Power Interface (ACPI) specification. Windows 98 only supports...
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    Why are there such discrepencies in CPU temperature readings?

    Beatle: I think I found the answer to your question via Intel pub. Intel® Pentium® 4 Processor In the 423-pin Package Thermal Design Guidelines 8.5.1 Thermal Diode The processor thermal diode should not be relied upon to turn on fans, warn of processor cooling system failure...
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    Why are there such discrepencies in CPU temperature readings?

    Yes, the BIOSes today should have ACPI down pat, but the OSs I wonder. I was looking through ACPI specs (cited earlier) for OS, and it can be done via OS, but there would have to be a thermal spec database (I think) for each motherboard model (like Video Cards). I just don't have the time to...
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    Why are there such discrepencies in CPU temperature readings?

    <<The P4 does that via its internal hardware, you don't even need ACPI for it.>> Yes, P4 does....but the question is does your motherboard, bios, and OS correctly implement ACPI standard today? Do you hear your fans [CPU/Pwr/Case] changing speeds, or do they run same speed always?
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    Why are there such discrepencies in CPU temperature readings?

    <<Originally posted by: stevty2889 Thermtrip# is what I believe shuts down the CPU>> <<Nope. The CPU clocks are controlled by the CPU>> =============================== First poster is correct..."The processor protects itself from catastrophic overheating by use of an internal thermal...
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    Why are there such discrepencies in CPU temperature readings?

    <<<Well my thermal throttling is definatly kicking in at 70c>>> Check out Intel's doc on 423 pin P4 ftp://download.intel.com/design/Pentium4/datashts/24919805.pdf See: 7.3 Thermal Monitor 7.3.1 Thermal Diode 8.4.1 Boxed Processor Cooling Requirements 8.4.2 Variable Speed Fan...
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    Why are there such discrepencies in CPU temperature readings?

    <AFAIK, there is no way to disable or modify the thermal throttling> ACPI specs is what handles this process via talking to Bios, but Microsoft didn't get their act together on Win98 OS. WinXP most likely does...have not checked it to make sure. Also, the motherboard's bios must have...
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    Why are there such discrepencies in CPU temperature readings?

    <<<AFAIK, there is no way to disable or modify the thermal throttling. This is done in hardware, entirely inside the CPU. You couldn't turn it off even if you wanted to. >>> Throttling can be controled, but...from Intel "If automatic mode is disabled the processor will be operating out of...
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    Why are there such discrepencies in CPU temperature readings?

    >>My question is if the temp readings are inaccurate<< Here is some tidbit info: In the Intel® Pentium® 4 Processor Datasheet (423 pin), Intel notes: 7.3.1 Thermal Diode The Pentium 4 processor incorporates an on-die thermal diode. A thermal sensor located on the system board may...
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    Why are there such discrepencies in CPU temperature readings?

    <<<Thermal management, even when supervised by Windows, >> runs through the ACPI "Thermal Zone" objects See: Advanced Configuration & Power Interface ADVANCED CONFIGURATION AND POWER INTERFACE SPECIFICATION Revision 3.0, September 2, 2004 http://www.acpi.info/spec.htm Long story...