CPU and Motherboard heat issues.

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RattlesnK

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Mar 29, 2017
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Hello,

I recently purchased a few new upgrades for my pc. These include a new CPU (intel i7 6700k) and a Morherboard ( Asus z170 pro). Ever since this upgrade, my pc has been acting up. I get incredibly loud fans, with high fan speeds. Using hwmonitor and speccy, it shows my motherboard and cpu spike to around 90 degrees Celsius, however I believe this to be a false reading, as the inside of my case does not feel feel that hot. I've tested played games since the upgrade, however the games start to lag, despite showing very good fps. I've made sure all my drivers are updated, I've applied thermal paste, and I've tried changing the fan speeds in the bios.

Stress testing my pc shows motherboard and cpu getting to around 90-100 degrees Celsius, however like I said before, I believe this is a false reading. Possibly also worth noting the motherboard has a 'T sensor', however at the moment there is nothing plugged into it.

My specs:

Asus GTX 980
Asus z170 pro motherboard
Intel i7 6700k
Corsair Vengeance 16gb Ram DDR4
Corsair CX600 600w Power Supply.

 
Solution
MeanMachine41
You will know if you applied your thermal paste correctly and check its spread when you remove your cooler.
Thermal paste should be applied with as little as possible to fill just the tiniest of voids. Just enough to spread to the outer thermal surface of the CPU but not beyond. Clean off what you previously applied with Isopropyl Alcohol 95%. Although your new cooler should come with pre applied paste I always wipe that of and use AS5 or MX4 which have excellent thermal conductive properties.
You should be OK with the new cooler. please report back when it's done.
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NateTech

NateTech

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Jan 4, 2016
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4,710
Hello!

These temperature readings are most likely accurate, but finding a solution shouldn't be a problem. The most realistic issue is either lack of thermal paste, or weak contact between the CPU and CPU cooler.

I'd attempt to check and see if the thermal paste is evenly spread, and from there make sure that the cooler is tightly secured to the cpu.

Hope to be of some help!
:)

- Nate of Ralleon Custom Built
 
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RattlesnK

Prominent
Mar 29, 2017
3
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510
Thanks for the reply!

Unfortunately I have made sure both of these have been done correctly. I followed a YouTube video on applying thermal paste and followed that. I am getting a better cpu cooler which should be arriving later today, so perhaps that's what will solve the issue.

Any suggestions on the motherboard temperatures, or could that just be because the cpu is getting hot?
 
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MeanMachine41

MeanMachine41

Judicious
May 8, 2014
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Hi RattlesnK :)

Some temperature packages do give false readings. for example CPUid HWMonitor will work with some systems and not others and the same with Open HWMonitor. Try other packages to compare results such as Realtemp, Coretemp, Aida64 and there are others.

I think maybe you are overheating and the CPU is throttling.
It would not be wise to continue if those temperatures are correct as you can degrade the CPU.
To check if your cooler is doing it's job, touch the HSF where it meets the CPU and you should not have to pull your finger away when under load.
Check in your Bios your idle temperature which should be 10-15C above ambient room temperature.
Ideal temps under load are 60-65C.

A few questions need to be answered.
1. How did you apply your thermal paste and with what.?
2. What CPU cooler are you using.?
Have you made any changes in Bios.? OC or voltage changes.
 
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RattlesnK

Prominent
Mar 29, 2017
3
0
510


Thanks mean machine!

Yeah I will try some more monitoring tools. As for the thermal paste, I applied a pea sized amount to the cpu, the added the cooler on top. When the temps were supposedly reaching around 90-100 on motherboard and cpu, I touched everywhere on the pc and nothing felt hot enough to make me jerk my finger away.

As for the cooler, it was such a long time ago I got it, I believe it was just an old stock cooler that came with my old i7 3770? Either way, I'm getting a new cpu cooler later today so I'm hoping that does the trick? The idle temps are usually around 40ish, for both cpu and motherboard. This is also the second 6700k I've bought as I returned the last one because it had the same issues, and I initially thought it was the cpu. I have also made no changes to the bios.

 
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MeanMachine41

MeanMachine41

Judicious
May 8, 2014
5,195
336
33,390
You will know if you applied your thermal paste correctly and check its spread when you remove your cooler.
Thermal paste should be applied with as little as possible to fill just the tiniest of voids. Just enough to spread to the outer thermal surface of the CPU but not beyond. Clean off what you previously applied with Isopropyl Alcohol 95%. Although your new cooler should come with pre applied paste I always wipe that of and use AS5 or MX4 which have excellent thermal conductive properties.
You should be OK with the new cooler. please report back when it's done.
 
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