Tm2

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]

References
  1. Performance and Power Consumption Control Features in Intel Pentium 4 and Intel Xeon Processors – Different Names, the Same Principles
  2. Thermal Monitor 2 - Intel E2160 - CPU Pentium Dual-Core 1.80Ghz Fsb800Mhz 1M Lga775 Tray Guide (Page 28)
  3. Berktold, Michael; Tian, Tian (September 2010). "CPU Monitoring With DTS/PECI". Intel. Retrieved 29 April 2017. Cite journal requires |journal= (help)
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