Quote Originally Posted by unclewebb View Post
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I did some testing today while running Prime95 small FFTs and an 8 watt reduction in power consumption at the plug was resulting in a 2C drop in core temperatures. That's with a Tuniq Tower on high at 4000 MHz and a core voltage of 1.40 volts. I tried to keep everything as equal as possible and used the Clock Modulation feature to switch back and forth between a duty cycle of 87.5% and 100%. This reduced power consumption by about 8 watts while still maintaining the same CPU frequency and voltage while running Prime95 small FFTs. That might not be 100% scientific but it's probably pretty close. The CPU temperature was in the low 50C range while testing.
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Why doesn't someone with water cooling and a water coolant temperature reading, drop vcore and clock as low as possible and then run tests with heated water to see how the sensors compare to the water temp. If everything's as low as possible, there shouldn't be much difference between the water temp and the cpu temp.