Load Temps vs. Heat Dissipation

[mao91]

I've noticed with my NH-D15-cooled i7-5820k the load temps can get as high as 69C (when exporting from Premiere). However, the instant the load drops, the temperature spikes down to the mid 40s and then more gradually back down to the mid 30s. The rate at which heat is dissipated is astounding. I've also noticed that with the Kraken X61, load temps are generally cooler (at least, in research; I don't have any hands-on experience with it). I'm curious to hear from other AIO users regarding how fast heat is dissipated away from the CPU, particularly with 240mm and 280mm radiators. What I mean is this: how long does it take your AIO to bring the temp back down from load temp to idle temp?

[The Official Czex]

My H105 does the same thing in a few seconds on a 4.8GHz OC.

 

EDIT: I put minutes instead of seconds ROFL

[Enderman]

yeah same, it takes seconds

yellow line is CPU

[DSteiny18]

im no super expert, bout would an increased flow rate help this issue? more water passing over the block should in theory be able to keep up with the extra heat that the cpu is dumping in to the loop

[Stefan1024]

I've noticed with my NH-D15-cooled i7-5820k the load temps can get as high as 69C (when exporting from Premiere). However, the instant the load drops, the temperature spikes down to the mid 40s and then more gradually back down to the mid 30s. The rate at which heat is dissipated is astounding. I've also noticed that with the Kraken X61, load temps are generally cooler (at least, in research; I don't have any hands-on experience with it). I'm curious to hear from other AIO users regarding how fast heat is dissipated away from the CPU, particularly with 240mm and 280mm radiators. What I mean is this: how long does it take your AIO to bring the temp back down from load temp to idle temp?

My setup needs >15minutes to heat up and cool down significantly.

Also the water temperature in you AIO is changeing slowly. The bug changes you are seeing are comming from the thermal resistance from the core to the water (core -> IHS -> waterblock -> water). As this path is only made out of a few gramms of metal it can change the pemperature fast.

 

Also you CPU need more energy than a ligth bulb. The bulb heat up to several hundred degrees in a fraction of a second. Don't be surpriced when the CPU is also fluctuating.