Iru121 Posted June 28, 2020 Share Posted June 28, 2020 (edited) Hello. can anyone help? Too much difference between coolan and cpu temp. I checked the hardware(standoff, mounting bracket, backplate), but everything seems to be fine. Thermal Paste - Thermal Grizzly Kryonaut https://imgur.com/gt4vTsq upd. after 10min https://imgur.com/FiEmWLE sorry for my bad English Edited June 28, 2020 by Iru121 Link to comment Share on other sites More sharing options...
c-attack Posted June 28, 2020 Share Posted June 28, 2020 They will never be the same except when the PC is powered off. The CPU is 70C temperature because the pins underneath are applying a certain level of voltage. That level changes rapidly and so does the CPU temperature. The H150i or any other air or water cooler can't do anything about that. What coolers do is take that heat and move it somewhere else so the temperature doesn't get worse. The quick analogy is a pot of water on the stove. The CPU is the heating element underneath. The cooler is the pot of water. They will not be the same temperature. The heating element is always hot and the water receives the heat and its temperature increases based on how much heat and for how long it is applied. On a 7700K with a 360mm radiator you are likely to see a +5-6C increase in coolant temperature under constant load. You might even see slightly more than that when gaming as the GPU heats up the case and raises the baseline temperature. Coolant temp is the lowest possible CPU temp at 0v. The CPU temp will be a most fixed value added to the coolant temp based on voltage at that second in time. Remember you can only lower the CPU temp by lowering coolant temperature (or reducing voltage). So if the coolant increase is only 4C, then you can only decrease CPU temp by 4C. You are not going to need to blast your fans very much and that is the difference between a 360mm and 120mm radiator. Link to comment Share on other sites More sharing options...
Iru121 Posted June 29, 2020 Author Share Posted June 29, 2020 Thanks! I thought it would be possible to keep the temperature within 50~55С. Apparently I was wrong in how the water cooling system works. Link to comment Share on other sites More sharing options...
c-attack Posted July 1, 2020 Share Posted July 1, 2020 (edited) All coolers will give you the same cpu temp at 100% load — at least for a few seconds. It’s what happens after that reveals the differences. Smaller coolers will slowly start to loose ground and the the cpu temp will continue to climb. A very large cooling system may not increase at all. It’s still heat in vs heat out and the cooler’s ability to dissipate heat. Watts matter and a small i3 4c/4t can be handled a lot easier than a 16 core whatever. However, none of that prevents the cpu from getting hot in the first place. That’s still tied to voltage and the physical properties of the cpu. Edited July 18, 2020 by c-attack Link to comment Share on other sites More sharing options...
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