How old is the NUC? Brand new? Several months? Over a year?
Has the bottom cover been removed and compressed air blown from the outside to clear the cooling fins ?
(that was my issue)
Do you know the CPU temprature? CNET scans software for viruses. This is a suggestion, not a recomendation, Here is the URL: CPUID - Download.com at htt p:// download.cnet.com/windows/cpuid/3260-20_4-74601-1.html Had to put in the blanks so the URL showed up.
Thank you for the good information. Fan RPMs are higer than expected but temperature is normal. At idle
I would have expected 1,800 RPM (based on my 1 user experience, *not* any technical specs)
Here the room temperature, humidity and altitude are important. I'm running 70F / 21C at 51% humidity at sea level. If you are in Denver Colorado the air pressure and cooling effect is less. If you are in Darwin, Australia, its pretty warm at 80F / 26C at night and 100F during the day.
You said the NUC is 2 days old. Sorry I just want to be sure that is fresh from the factory and not "pre owned"
Also, with the bottom cover removed and looking into the back grill where the hot air or heat comes out; shine a light onto the open blades of the cooling fan toward the grill. You should be able to see the light through the cooling fins and reflecting off the shiny fins.
If not, try blowing some compressed air from the outside into the grill where the hot air comes out to blow dust toward the fan and out. (smiles) With the bottom cover off. Just be careful not to bend the cooling fins with the compressed air.
Please let us know what you find. Here are my results. Fan has gotten up to 3k rpm but runs below 1800 RPM when idle. I wish I had a graph over time.
Thank you for your response.
The NUC is brand new.
I am in San Diego. ~70F at 75% humidity. Elevation ~392 ft.
Your fan (blower) reading is quite normal for a Skull Canyon that's idling.
According to N.Scott.Pearson, the minimum you should set the minimum blower value is 25 in the BIOS. (By default it is at 27 under the cool and balanced settings).
You could go with a custom cooling profile but you need to make sure that the blower runs at 100% when the CPU temp reaches 80C.
There is a formula for it given by Mr. Pearson but I will let you search for them, there are a few posts here in this community.
Wow. Sounds like things are normal. I have seen lower fan speeds temporarily but agree with Stealth70mde's suggestion.
N.Scott.Pearson is the man! Not all components have thermal protection or shut down and expect air to be flowing around or past them.
What is your goal? Just to know if the fan is operating normally or to reduce it to being off?
Thank you for your reply. I had found the formula in NUC's manual and applied the custom settings but to no avail the fan still runs all the time.
Yea my goal is to not hear it under very light load. I live in a very quiet room and the fan noise distracts me when I'm studying.
There is no way to shutdown the fan on the Skull Canyon. Maybe there is but I wouldn't try it.
Did you try 25% minimum fan load instead of 27%. it's close to 200 RPM and makes a difference in noise level.
The CPU of the Skull Canyon is pretty powerful and runs much more watts than other NUCs models.
I think the "normal" NUCs can be run without the fan running.
What I meant was that 25% is roughly 2550RPM while 27% is roughly 2800RPM. The 200 RPM was the difference.
Seems to be recommended not to go under 25%.
Your min temp and increment are quite something.
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Thank you very much to TechnoCaveman, stealth70mde, for all the information and suggestions provided previously and joining the thread.
In order to reduce the fan noise, did you try to get into the BIOS and set the fan to “quiet”?
That could be a good option to try in order to eliminate the fan noise.
Any further questions, please let me know.
Yes. As mentioned in my first post I tried the quiet mode but with no success as to eliminate the noise.
Thank you. You said you could hear the fan in the first post.
May not be possible to eliminate that. A third party group has a case for the NUC that radiates heat, but that may not bee good for all the components.
The only other suggestion is mineral oil cooling in an aquarium See: Mineral Oil PC Aquarium - YouTube Do's and don'ts here: Awesome Mineral Oil Computer - YouTube
Mineral oil is non conductive & used in some H.V. transformers. Easy to cool. From what is out there does not seem to break down / expand or hurt mother boards or components. Some added an external heat exchanger.
Air pump optional as it is loud - in my opinion. Lights can look nice.
However this is probably not what you are looking for. Kinda sounds like you want a totally quiet little black box. Is that more the goal ?