CPU Temperature too low

[Remco_]

I've build this new system today with an i5 6600k CPU. I put on a Noctua NH-U9B SE2 cooler and looked up my cpu temperatures. On HWinfo it shows that its as low as 15c degrees sometimes, are these numbers even accurate? These temperatures are way too low and I can't figure out why. I've tried adjusting the cpu fan but it doesnt go below 1700rpm while on the box it says this fan can do 1600rpm max (I've also tried changing it in the BIOS but nothing happens). What should I do? Isn't this dangerous for my cpu?

 

[ChumP]

Low temperatures won't affect your CPU.
You're fine.

 

[Duck77]

Low temperatures won't damage your CPU in anyway, also a benefit with the temperature being so low you can overclock your processor without any worries.

 

[Th3-Hunter333]

As many would say, the colder a processor the better.

People even use liquid nitrogen on them

 

[balister]

Your system is basically idling (take a look at the wattage at the bottom middle of the HWInfo). Having temperatures that low during idle is not unusual at all. If you really want to see what kind of temperatures you can get to, run a torture test and the HWInfo at the same time and look at temps then. That will let you know if your heat sink has a good connection or not if the temps climb into the high 50s/low 60s C (which is fairly normal for air cooling during a torture test).

 

[Karadjgne]

Temps are wrong. Absolutely impossible to have any temp anywhere in a pc lower than ambient temps without chemical intervention like LN2 or running the cooler as part of an air conditioning loop (absurd). So unless you are sitting in a close to 0°C ambient temp room, your Hwinfo64 is bunk.

My best guess is that Hwinfo64 isn't reading the sensors correctly on your mobo, and may not until updated to work with lga1151 boards. Try different software and check bios readings, msi has 'click to bios' software that will open bios under Windows usage, so you'll see what bios says during normal windows operation. Use speccy and/or realtemp as both were written specifically for Intel cpus

 

[Remco_]

But that doesn't explain that the fan goes 1700 RPM while it says it can do 1600 RPM max.
I've heard other people say that its too cold because it goes below my room temperature which is 21 celcius degrees. Reason that the difference in temperature would cause water drips on the cpu.

 

[Th3-Hunter333]

Do not run a stress test on that system yet, what are you using to cool it?

Also use more than one temperature monitor software for accuracy, it could be wrong

 

[Remco_]

Realtemp is also showing temperatures as low as 14C at startup.

 

[Karadjgne]

What does bios read, in bios and in Windows.

 

[CompuTronix]

Remco_,

A minor 100 RPM inconsistency in fan speed is not unusual, and isn't anything to be concerned about. A BIOS update at some point might correct the curve issue and fan speed behavior at idle in Windows.

Fortunately, both Core Temp and Real Temp (developed specifically for Intel processors) allow you to calibrate your core temperatures.

In Real Temp, click on "Settings", then click on "Set TJ Max". Change all four settings from "100" to "110", then click "Apply" and "OK".

In Core Temp, click on "Options", then click on "Adjust offsets". Change "Core 0" from "0" to "10". Make sure "Apply to all cores" is checked then click "OK".

This will correct all your Core temperatures by +10C so as to indicate at least 3C above ambient, which is appropriate for your 92mm 4 pipe cooler.

Having seen a number of these Threads, I suspect that Intel may release a microcode update to correct this issue with core temperatures being too low.

Remember that the Digital Thermal Sensors (DTS) in the individual cores aren't always linear from hot to cool, nor are they always equal in range or response. Sensors can be checked by using the "Sensor Test" in Real Temp.

Although Intel's specification for DTS accuracy is +/- 5C across their entire range, deviations between the highest and lowest cores can be as much as 10C. Sensors are typically more accurate at high temperatures for Throttle protection.

Next, I recommend that you test your Core temperatures at 100% workload. Please follow Sections 11, 12 and 13 in my Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

Let's see what you get.

CT

 

[Remco_]

I have just updated my BIOS and it's displaying good temperatures now. (23 to 29C)
Thanks a lot of the support guys. 🙂