Recently I purchased a NUC8i7BEH and loaded it with windows 10. However I noticed that the fan kicks in very often for no apparent reason (different speeds).
After some investigation I came to know that the cpu core speeds is cycling constantly to all kinds of different speeds, within seconds I see core speeds ranging from 400mhz to 4200mhz (from HWINFO tool), while I'm doing nothing with the pc!
Consequently the temperatures fluctuate a lot from the high 40s to the the mid 90s. At one moment the temperature can be 50c and a second later it's all of a sudden 75c..
It's basically a clean windows 10 install so nothing special is happening on the pc.
Is it normal that the temperature goes all the way up to 95c during normal desktop use? (no gaming, or video etc)
What you are seeing is all of the background maintenance tasks that Windows 10 runs. This is perfectly normal - as are the temperatures that you are seeing.
The fan noise can be very high and makes the experience in a quite room quite bad to be honest. Are there any improvements I can do? I already set the cooling options to quiet in the visual bios, but that didn't do much.
So I've set the setting exactly as yours (+ set the performance to balanced and some strange things happened:
I use the same setting on my 8i5BEH (thanks to recommendation by @n.scott.pearson.
Its ok (but not more than "ok". From time to time, however, the fan becomes loud. But this happens not after booting Windows (unless updates are still being processed).
But when streaming videos (for example SkyGO) or using Google Maps, the fan turns up a lot. When streaming, the CPU still reaches temperatures just under 100 °C. From my point of view this is remarkable because I also have a NUC6CAYS (which has no active cooling). CPU is a Celeron (4 cores) instead of an i5. But it doesn't get that warm although the CPU runs practically permanently in bost mode.
I have another device here (Zotac ZBOX). Nothing happens with the fan when I stream or use many applications at the same time. The fan runs constantly quiet.
Unfortunately, you have to realize that Intel has overstated miniaturization. The cooling is not optimal in this form factor.
Actually there are only two reasons why I still have my 8i5BEH:
1. I am hoping for long-term support (drivers & BIOS updates) and
2. I haven't found anything comparable with an AMD Ryzen CPU yet.
I noticed with my 8i5BEH that network traffic leads to a significant increase of the fan. So when I make my backups on NAS and over the Internet, the fan turns up (not all the way, but audible). Not much happens during the upload (about 2.5 MB/sec).
This makes me think that, for some reason, your streaming is utilizing only software transcoding. You would not see the processor generate as much heat if it was doing hardware transcoding. Regardless, with the settings I provided, you should not have seen the temperature make it to 100c. There may be another issue - perhaps with the TIM - going on here. You may want to consider having Intel replace the unit.
The NUC6CAYS/NUC6CAYH *does* have active cooling, BTW. The problem is that the design utilizes a SOC processor that does not support the PECI bus. As a result, the fan speed controller chip does not have access to processor temperature readings; only the VR and Motherboard sensors are available to support all fan speed control decision-making. A valiant effort was made to draw a correlation between the VR temperature and the processor temperature (based on the theory that, as the processor does more work, it demands more current from the VR components and thus makes them hotter), but this correlation is loose at best.
I agree that there is something about the Turbo Boost feature that is causing undue heat generation. Try leaving it on and set the processor to run in Balanced Mode in both the BIOS and Windows settings and see if you get better results.
Hope this helps,
Thanks for your answer. It gave me the idea to compare different streamings. Results below.
To briefly clarify the basic conditions:
Room temperature: Approx. 20 °C,
NUC is free,
Operating system: Windows 10 (1809), RAM: 16 GB,
Network connection: LAN, Screen: 3840x2160 / 60Hz via HDMI
Temperature during light use (browsing, music ...): 50-55 °C.
Temperature data read out with CoreTemp
While streaming SkyGO, the temperature rises close to 100 °C (90 °C - 98 °C). After about one minute a temperature is reached that oscillates between 85 °C and 95 °C, the fan always turns audibly up and down. Meanwhile the CPU load is 30%-50% (fluctuating). If I start Chrome during the stream, then the 100 °C are apparently exceeded for a short moment (but then immediately fallen below again!), at least Core Temp shows a warning and marks a core with an exclamation mark. When I close the SkyGO App, the temperature drops below 60 °C in about 10 to 15 seconds.
While streaming Netflix, the temperature rises to about 75 °C for a short time, then it adjusts to about 55 °C.
While streaming videos on Youtube, the temperature rises to about 75 °C for a short time, after that the whole thing regulates at about 60 °C.
So it seems as if the problem is more with the SkyGO-App. Sky had changed the streaming only a few months ago and made the app mandatory on PCs and Macs as well. Before that, streaming was possible via the web browser.
About the NUC6CAYS: You're right, it has a fan, sorry for confusing. But it's absolutely quiet, no comparison to the 8i5!
Unfortunately, I don't have any current temperature values of the NUC6CAYS with the SkyGO app.
When I get there, I'll test it to see if the temperature rises so much.
Just an FYI everybody, I will receive a replacement unit today. I'll update you over the weekend.
Hopefully the result is better.
I also am planning to buy some descent TIM and apply that, should give me a few degrees off.
The aksana fanless cases I think are but-ugly :)
Yes, the NUC6CAY is absolutely quiet, but this is because it doesn't know how hot the processor is actually getting! Unfortunately, situations have been seen where the processor is so hot that it is throttling yet the fan is doing nothing about it! Having short (minute or so) spikes to the TCC assertion point is ok, but extended periods of time where this level is sustained is going to damage the processor over time.
Thanks for your reply.
So having a Temperature between 85 °C an 95°C (fluctuating) is ok the 8i5?
I will configure my NUC6CAYS to maximum cooling. Since its away from where I sit while using it the fan sould not be audible. The NUC6 is placed in a media cabinet and maybe its better to give it the maximum cooling that is possible.
Yes, those temperature levels are fine. Really, the trying issue with them is how loud the fan gets while attempting to pull the temperature down...
So I got a new unit. I can definitely say it's less loud then the previous unit and gets less hot (it rarely goes over 90c, while the other one easily went to 99c). And idle temp also seems a bit cooler (high 40s vs mid 50s - allthough I'm also undervolting most of the time, currently at -0.070V).
But it is DEFINITELY audible. It could be that I'm maybe spoiled all these years with an inaudible macbook pro and this is normal, but I still think it's annoying. So I'm going to do my due diligence on replacing the TIM (anyone can guide me to the right direction?) and also will keep my eyes open for other cooling solutions.
Fyi n.scott.pearson: your settings really are not working for me, every few minutes the fan goes to max (also on the new unit). It seems the default option is working best for me (balanced).
Just disabled Turbo Boost Technology combined with your settings and it's indeed very silent now for the majority of the part.
But every time I use a custom cooling configuration every now and then the fan speed goes to maximum, even though when the cpu temp is only 60-70c.... (eg. I'm doing a 5min cpu stress test with XTU and the fans when to max twice while cpu temp never went above 67c) I have the impression these custom cooling settings are buggy as hell.
Also will it not be a disadvantage to not have Turbo Boost Technology in certain cases?
So, it is not clear for me? Is your NUC silent now, after disabling the Turbo Boost and applaing the settings I've proposed?
In my opinion, in most situations, disabling the Turbo Boost, will not have impact on computer performance. This Turbo Boost technology is simply an automatic overclocking of the CPU. It has still problems and is causing to thermal throtteling. The oveclocking is not used by average user. I think that silent computer is more important.
With Turbo Boost + your cooling settings it's very silent now yes (you hear the fan very faintly - I don't see where in XTU I can see the fan speed though).
The temperature idles now around the high 30s, which is very nice... I'm going to see if with turbo boost enabled it is can sustain that quietness (means your profile would work very well)
So I'm holding off a little bit on applying some descent TIM.
(btw I think you have an older BIOS then I do, because when I deselect 'Fan off capability' the option to set the Fan Off Temperature disappears (which makes sense offcourse). I run the latest BIOS 64 (only out a few days).