I do not know how
@Derek12 measures power but here are 2 examples of temp effect.
Cooler: H110i 280mm, Ambient 25°C (air to radiator). Min~Max Fans/Pump rpm (550~2050/2340~2820)
Notice the frequency, voltage and power difference. Its not the best test as the cooler's capacity is high for the CPU under almost any circumstances, but it will give you an idea.
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1st test CPU-Z stress test. Keep in mind that this is considered a light load.
Temp diff 5°C. Freq diff 35~40MHz (effective)
1a. Low cooling capacity
View attachment 186298
Max reported power (PPT) 70W, 87.5% PowerReportingDeviation(Accuracy)
True power 70 / 0.875 = 80W
1b High cooling capacity
View attachment 186299
Max reported power (PPT) 72.2W, 89% PowerReportingDeviation(Accuracy)
True power 72.2 / 0.89 = 81W
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2nd test Prime95 FFTs 128KB. This is one of the heaviest and worse load the CPU can face. I usually avoid running it under any conditions but I do briefly and rarely for sake of observation.
Temp diff ~7°C. Freq diff 60~65MHz (effective)
2a. Low cooling capacity (wrong voltage circled sorry, its the above)
View attachment 186300
Max reported power (PPT) 96W, 90.5% PowerReportingDeviation(Accuracy)
True power 96 / 0.905 = 106W
2b High cooling capacity
View attachment 186301
Max reported power (PPT) 103W, 92.2% PowerReportingDeviation(Accuracy)
True power 103 / 0.922 = 111.5W
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Cinebench R15/20 are right in the middle of the above 2 tests in terms of CPU stress and power consumption.