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Thread: Retail AMD Phenom II X4 (Deneb) OC spotted

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  1. #10
    Xtreme Cruncher
    Join Date
    Aug 2006
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    Denmark
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    I think some people need a wakeup call regarding temperatures. There is a reason 3Ghz Phenom is 125W TDP, or even 95W if you want for the 2.8Ghz AM3 version.

    AMD uses an uncalibrated sensor. Intel uses a calibrated one inside the hottest part of the core(s). Plus there is the tjmax etc values. Do I even have to tell that story? Its only recently we got actual track on 45nm Core 2s.

    For some odd reason the power consumption=heat have been lost somewhere for a bunch of people. Lets be honest here. If CPU A uses 100W and CPU B uses 100W. Then 1 CPU wont be 60C and the other one 30C unless their cooling solution is pretty different. Its only different in the illusion.

    Here is a cute example. 3 programs. 3 different temperatures.


    http://download.intel.com/design/pro...nex/320837.pdf

    PDF doc pg 46 wrote:
    Intel does not test any third party software that reports absolute processor
    temperature. As such, Intel cannot recommend the use of software that claims this
    capability. Since there is part-to-part variation in the TCC (thermal control circuit)
    activation temperature, use of software that reports absolute temperature can be
    misleading.
    See the processor datasheet for details regarding use of IA32_TEMPERATURE_TARGET
    register to determine the minimum absolute temperature at which the TCC will be
    activated and PROCHOT# will be asserted.
    Last edited by Shintai; 12-24-2008 at 03:20 PM.
    Crunching for Comrades and the Common good of the People.

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