Tm2

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TM2, or Thermal Monitoring 2, is a throttling control method used on LGA 775 versions of the Pentium 4, Pentium D and Celeron processors and also on the Pentium M series of processors.[1] TM2 reduces processor temperature by lowering the CPU clock multiplier, and thereby the processor core speed.[2]

In contrast, TM1 inserts an idle cycle into the CPU for thermal control without decreasing multipliers.

TM1 and TM2 are associated with DTS/PECI — Digital Temperature Sensor/Platform Environment Control Interface.[3]

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