Intel Power Limit Throttling (PL1/PL2)

What is INTEL_TDP_THROTTLING?

Intel Power Limit Throttling (PL1 or PL2) triggers when the processor exceeds its long-duration or short-duration power limits, reducing core frequencies to keep power draw within design specs.

Common Causes

• Aggressive CPU core overclocking
• Insufficient CPU cooling or air flow
• Low motherboard VRM quality or overheating VRMs
• Incorrect PL1/PL2 power limits set in BIOS

Step-by-Step Fix Guide

• 1
  Increase CPU cooler fan curve

  Adjusting PL1/PL2 limits and improving cooling restoration helps restore baseline CPU efficiency under heavy workload.

• 2
  Adjust power limits (PL1/PL2) in BIOS

  If core frequency remains low, consider repasting the processor or upgrading the cooler.

• 3
  Disable Intel Thermal Velocity Boost overclocking in BIOS
• 4
  Improve PC case ventilation

Commands & Diagnostics