6700k Temps Jumping (idle)

[HuniPotter]

Hi, im having an issue with my 6700k where my cpu temps occasionally jump from 26-27 to high 30s mid 40s for a second or so, Im using an asus z170-AR with a Corsair h100i V2. I have already run the IntelProcessor Diagnostic Tool as suggested on another forum and passed all the tests but compared to other similar systems the temp jumps seem irregular.

 

[deterforskolen]

Hi,

This could be related to Intel's Digital Thermal Sensor (There is a sensor on each core). The response time is pretty low, in fact it is 256 milliseconds. So it could be because the cores responds almost instantly to the sensor when there is a load change.

 

[HuniPotter]

So there is nothing wrong with my processor? Had a friend mention that the thermal paste could not be applied properly

 

[CompuTronix]

HuniPotter,

The type, quality and application of thermal compound either between the Die and the Integrated Heat Spreader (IHS), or between the IHS and the cooler does not cause spikes in Core temperatures. As deterforskolen medntioned, Core temperatures respond instantly to changes in load.

Intel’s specification for Digital Thermal Sensor (DTS) response time is 256 milliseconds, or about 1/4th of a second. Since Windows has dozens of Processes and Services running in the background, it’s normal to see rapid and random Core temperature “spikes” or fluctuations, especially during the first few minutes after startup, which should eventually settle. Any software activity will show some percentage of CPU Utilization in Task Manager, where unnecessary Tray items, Startups, Processes and Services that contribute to excessive or continued spiking can be disabled.

6th Generation processors introduced "Speed Shift" technology in Windows 10, which responds much faster to changes in workload than "SpeedStep" due to having many more Core speed and Core voltage transition levels.

Since 7th Generation Speed Shift is twice as fast as 6th Generation, the spiking issue is more pronounced where users complain of severe Core temperature spikes which cause fluctuations in fan RPM at idle. Motherboard manufacturers are currently developing BIOS fixes that include separate SpeedStep and Speed Shift settings with more flexible fan curves and time delay options.

For more information, please read: Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

CT