13th Generation Intel® Core™ and Intel® Core™ 14th Generation Processors

Datasheet, Volume 1 of 2
Supporting 13th Generation Intel® Core™ Processor for S/P/PX/H/HX/U and S-Refresh Processor Line Platforms, formerly known as Raptor Lake and Raptor Lake Refresh

ID Date Version Classification
743844 10/17/2023 Public

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MSR Based On-Demand Mode

If Bit 4 of the IA32_​CLOCK_​MODULATION MSR is set to 1, the processor will immediately reduce its power consumption using modulation of the internal processor IA core clock, independent of the processor temperature. The duty cycle of the clock modulation is programmable using bits [3:1] of the same IA32_​CLOCK_​MODULATION MSR. In this mode, the duty cycle can be programmed in either 12.5% or 6.25% increments (discoverable using CPUID). Thermal throttling using this method will modulate each processor IA core's clock independently.