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. TM2 reduces processor temperature by lowering the CPU clock multiplier, and thereby the processor core speed.
In contrast, TM1 inserts an idle cycle into the CPU for thermal control without decreasing multipliers.
- Performance and Power Consumption Control Features in Intel Pentium 4 and Intel Xeon Processors – Different Names, the Same Principles
- Thermal Monitor 2 - Intel E2160 - CPU Pentium Dual-Core 1.80Ghz Fsb800Mhz 1M Lga775 Tray Guide (Page 28)
- Berktold, Michael; Tian, Tian (September 2010). "CPU Monitoring With DTS/PECI". Intel. Retrieved 29 April 2017.
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