Hardware CPU temperature gets really high (but not really)

ThoD · Apr 29, 2019

So, long story short, in the past two days, my CPU gets REALLY hot (like 60°C) and since it's an FX6350 with stock cooler, the cooler goes full speed and is REALLY loud (like 65-75dB). However, thing is that even if it runs for a hour or so in that condition, the back plate doesn't get warm even a bit, which it should do, so I think the internal thermometer is broken. If I push the CPU to even 25% usage, the motherboard's thermometer says it's at like 59-66°C, which makes no sense, as before this started I could have it at full load for HOURS and it wouldn't go above ~52°C. I often have my PC encoding/processing stuff or I'm playing games and it's really annoying to have such an issue!

I haven't changed any settings in the BIOS (be it for power management or fans), haven't done any modifications to the hardware and the room's temperature is pretty much the same it was, so I really don't know what could be causing the issue here:/ Anyone has any ideas on what I could do to fix this problem?

DKAngel · Apr 29, 2019

i owuldnt worry about it, my i7 gets to around 80C on full loads whee as you 66 isnt really hot at all

Hayato213 · Apr 29, 2019

You are fine, it is not like you are hitting 90 Celsius.

shadowkillerdrag · Apr 29, 2019

Is the computer idling when it does that? I mean if you are encoding and playing games I don't see why that would be not normal. Maybe change the fan settings for the cpu cooler in the bios to be a bit more relax in terms of the spin up.

The stock cooler on the FX series uses a latch to the existing mounting point on the motherboard. The backplates don't typically get warm a more apt text would be the heatpipes.

Alexander1970 · Apr 29, 2019

Hello.

That is maybe ONE of a lot of possibility/guess.

I haven't changed any settings in the BIOS (be it for power management or fans), haven't done any modifications to the hardware

Its possible that an App/an unwanted thread runs in Background and "puts a strain on your system".
That means "something" maybe uses CPU Power and thats why your CPU consumes more Power and the Cooler runs faster.

It could explain the sudden change of the behavior.

You can look into your Task Manager if its visible of such an Task/Thread/App.You may use an Tool for scan your system of Malware/Trojan etc. to get sure of no "interference" from this side.

If there is nothing suspect,you can change the "idle" settings for your CPU in the Energy management for Windows.Maybe this value is to high.Please would you be so kind and tell us your Windows version.

Thank you.

ThoD · Apr 29, 2019

Like I said, just two days ago ON FULL LOAD I used to get ~52°C tops. What I care about is not the high temperature (even though it's close to max suggested temp by AMD which is 70°C), but the fact that because the temperature is read as that high the CPU cooler which is an old-gen AMD one starts going full speed and is REALLY loud, which causes issues when I try to do things like play while having voice chat on or recording gameplay with voice, among other things (annoys the neighbors for example because there's next to no soundproofing). At full load I used to get said temperatures with the cooler running at ~75-80% capacity which made it more than tolerable even if still a bit loud (but at least not so loud that the microphone picked it up). Looking for a way to make the temperature counter show the actual temperature again instead of 60°C right away when it gets even a bit stressed, since my guess is that it's not working properly...

shadowkillerdrag said:
Is the computer idling when it does that? I mean if you are encoding and playing games I don't see why that would be not normal. Maybe change the fan settings for the cpu cooler in the bios to be a bit more relax in terms of the spin up.

The stock cooler on the FX series uses a latch to the existing mounting point on the motherboard. The backplates don't typically get warm a more apt text would be the heatpipes.

On idle I get what I used to get, which is yet another reason why I think it's the thermometer in the motherboard that's the problem. Idle or under even very light load (eg: 15%) I get 40-45°C, then as soon as I try to do anything that get the load to 25-30% temperature jumps to 60°C and cooler starts sounding like a wind turbine! Before the issue started, just like I said above, I got ~52°C under FULL LOAD. What I mean by "back plate" is the right side of the case (behind where the CPU is mounted) and after an hour at 50°C it gets a little bit warm due to contactivity, but when it says it's running at such high temperatures, even after 2-3 hours of use the plate is still really cold, which is the main reason I think the thermometer is broken.

alexander1970 said:
Hello.

That is maybe ONE of a lot of possibility/guess.

Its possible that an App/an unwanted thread runs in Background and "puts a strain on your system".
That means "something" maybe uses CPU Power and thats why your CPU consumes more Power and the Cooler runs faster.
It could explain the sudden change of the behavior.

You can look into your Task Manager if its visible of such an Task/Thread/App.You may use an Tool for scan your system of Malware/Trojan etc. to get sure of no "interference" from this side.

If there is nothing suspect,you can change the "idle" settings for your CPU in the Energy management for Windows.Maybe this value is to high.Please would you be so kind and tell us your Windows version.

Thank you.

I ALWAYS make sure to keep my PC optimized and clean, reason why my ~6 year old PC even after 3 years of constant use since the last format still boots into Windows in less than 20 seconds and that's without an SSD, so I'm pretty sure it's not something running secretly. The only thing that drives the CPU usage up is the things I manually use. However, the issue is not high CPU usage, it's that the system reads very high temperatures even with relatively low usage. I'm on Windows 7 x64 Professional for reference since you asked.

Alexander1970 · Apr 29, 2019

Ok,thats fine.

Please take a look into Energy Managment for the Idle Value of your CPU.Just for Check.

Why i "insist" ?

I´m on windows 10 x64 pro.And one day i´ve noticed that my CPU a Intel Core i7 has an idle Temperature approximately 50 °C.
I´ve changed the stock Cooler to an expensive one but no change.
I´v read a little in the internet and someone point me to the idle state of the CPU in the energy management.
I´ve looked into and it was 100 % ! Means the CPU is ALWAYS on full load.
I never changed it before or take a lok on this.
Now its on 5 % and the idle Temperature is around 29°C.

nero99 · Apr 29, 2019

Sounds like you should buy a different cooler and add new thermal paste.

ThoD · Apr 29, 2019

alexander1970 said:
Ok,thats fine.

Please take a look into Energy Managment for the Idle Value of your CPU.Just for Check.
Why i "insist" ?

I´m on windows 10 x64 pro.And one day i´ve noticed that my CPU a Intel Core i7 has an idle Temperature approximately 50 °C.
I´ve changed the stock Cooler to an expensive one but no change.
I´v read a little in the internet and someone point me to the idle state of the CPU in the energy management.
I´ve looked into and it was 100 % ! Means the CPU is ALWAYS on full load.
I never changed it before or take a lok on this.
Now its on 5 % and the idle Temperature is around 29°C.

Again, problem is not high temperatures or high usage, it's that the thermometer reads high temperatures even though the case feels pretty cool to the touch (even directly touching the heatpipes is only "warm-very slightly hot" even though they supposedly should be at 55+°C when the problem happens). Anyway, here's the full breakdown to save trouble troubleshooting:

Those are the values when PC is idle with just browser open and 4 tabs. To save on power consumption the CPU ratio clocks down automatically to minimum required (x7 being lowest it can go) with the x19.5 being the max multiplier under full load before the built-in auto overclock for when at full load (which gets it up to x21.5). It's really not because of power management or usage, just the moment the CPU gets stressed even the tiniest bit temperatures shoot up for absolutely no reason! Also, like I said this has only been happening in the past two days, before that I had absolutely no issues! As for fan speeds, they go to about 3900RPM for the CPU fan and the other two go to about 1800RPM and 1180RPM respectively under full load. Also got two more MOLEX fans so they aren't shown since they aren't connected to the motherboard but they run at ~1200RPM each all the time. The CPU cooler by itself sounds like a wind turbine at full speed, add the other fans at max capacity too and it feels like my PC will take off any minute :rofl2:

nero99 said:
Sounds like you should buy a different cooler and add new thermal paste.

Why would I buy a new cooler when this one works just fine?:/ It's not the cooler that has a problem, it's the motherboard reading too high temperatures for no reason even though the CPU isn't actually hot! Motherboard has the thermometer located right at the bottom of the socket, meaning thermal paste doesn't come into account (plus I changed the paste like a month ago). Problem started out of nowhere, which is why I'm so confused at the situation.

EDIT: Left some bookmarks that have pirated stuff visible in the screenshot, sorry

chocoboss · Apr 29, 2019

60°C is not really hot ! XD

My old core 2 quad run at 99°C while playing GTA5, not a real problem =)

ThoD · Apr 29, 2019

chocoboss said:
60°C is not really hot ! XD

My old core 2 quad run at 99°C while playing GTA5, not a real problem =)

First off because it seems a lot of people have nothing better to do than post irrelevant things, 60°C IS hot, under full load a properly maintained desktop PC with good airflow should never get above ~55-65°C depending on the processor with ~70-75°C being the maximum it should ever go to as going any higher can cause minor damage to the CPU (with ~95°C being the point where permanent damage may happen so the BIOS shuts the system down to prevent that, meaning it's basically impossible to be playing at 99°C on MOST PCs. For reference, look here: http://www.buildcomputers.net/cpu-temperature.html

Anyway, back on topic, my issue is that it's not actually hot, it just says it's hot even though it's cool enough to touch the heatsink with my hand just fine and the case is cold too, but because the BIOS READS high temperatures the fans go crazy!

EDIT: Just adding some stuff here for the topic... I started a simple video conversion as an example, here are the values at ~55% CPU usage:

Notice how the System Fans 1 and 2 are working at standard speeds even though it's supposedly really hot right now? That's because the System thermometer (which in my motherboard is located literally 2cm from the CPU socket) reads that the temperatures are normal. Before I had this issue, when I had it under full load and the CPU was at ~52°C the system one jumped to ~45°C but now it stays normal. It's NOT the CPU getting hot, it's only that the BIOS detects the temperature as high when it's not really high. So, anyone has any ideas on what I could try?

Alexander1970 · Apr 29, 2019

Hello.

You can try another tool like Coretemp or Speedfan or HFiNFO to check if the readings are correct from your Tool.

Is your Mainboard BIOS up to date ?

ThoD · Apr 29, 2019

alexander1970 said:
Hello.

You can try another tool like Coretemp or Speedfan or HFiNFO to check if the readings are correct from your Tool.

Is your Mainboard BIOS up to date ?

BIOS version is irrelevant since it wouldn't happen suddenly for no reason. As for temperatures, there are 3 thermometers in my motherboard, a hardware CPU thermometer (which works correctly and is displayed in a small debug LCD screen my motherboard has) that shows external CPU temperature, then a software controlled CPU thermometer (which is the one not working right) that shows the internal temperature and a software controlled one that shows the temperature of the system (as in motherboard and air inside case) which can be seen in the screenshots. I've tried resetting BIOS settings and redoing them just in case, but didn't work, so next I'm gonna try going over all circuits/components on the motherboard related to the CPU thermometer using a multimeter to make some everything is working as it should and the problem isn't caused by some burnt capacitor/resistor but since that's a lot of work asking for any ideas on other things I could try...

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