Sudden i7 temp spikes, crazy loud h100i v2 fans - even on idle

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bostonkris34

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Mar 9, 2017
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Hi, I have finally built what I think should be an excellent gaming rig. Here are my stats:

- ASUS Strix z270e Gaming
- ASUS Strix 1080 ti
- Corsair h100i v2
- Intel i7-770k
- EVGA SuperNova 650 v2
- 16GB Corsair Dominator DDR4 RAM 3000
- Zalman Z9 Neo case with 3 fans (removed top 2 fans for the Corsair)

My h100i v2 sounds like a jet plane taking off, even at idle. Following other advice on this forum, I set my Q-Fan control in my Bios to 100%.

So now, in C LINK, the Fan is at 2100rpm, the pump is at 2880, and if I dare to do something like open Photoshop, the fan instantly spikes to 2700 and the LED indicator goes red.

Temps on the i7 don't jump into the 50s and 60s but only for a second or two, then back to their standard ~34 degrees.

My GPU is currently at 43 degrees with 0rpm fan at idle. Computer is at 1% load. Other 3 fans are spinning upwards of 1200rpm.

Not sure what other diagnostics I might need to run, but I feel like my computer is very sick and I would really appreciate any help!

For now, I'll go back into my bios and set operation to Quiet, but it was still loud then. I'm also leaving the side door off the case to try to maximize airflow, not sure if that's a good or bad idea.

UPDATE: I switched CLINK to Quiet, and I'm basically idle (just using Word). the fan drops to 0rpm, which is nice, but then will at random times jump furiously to 1800rpm and then back down - when I haven't really done anything at all. Pump is also averaging 1300rpm when the fan is at 0rpm. GPU is at 46 degrees idle. i7 temps in the mid-30s. Firing up Photoshop has the same effect as above - it's just the baseline rpm (and noise) is 0. So I'm sticking with this mode, but still feel there is a problem here - do you agree?

Thanks as always to the fine users of this helpful forum!

Kris
 
Solution
CompuTronix
bostonkris34,

Intel’s specification for Digital Thermal Sensor (DTS) response time is 256 milliseconds, or about 1/4th of a second. Since Windows has dozens of Processes and Services running in the background, it’s normal to see rapid and random Core temperature “spikes” or fluctuations, especially during the first few minutes after startup.

However, 6th Generation processors introduced "Speed Shift" technology in Windows 10, which responds faster to changes in workload than "SpeedStep" due to having many more Core speed and Core voltage levels. Since 7th Generation Speed Shift is twice as fast as 6th Generation, some i7 7700K users complain of severe Core temperature spikes which cause fluctuations in fan RPM at idle...
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CompuTronix

CompuTronix

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Nov 13, 2006
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bostonkris34,

Intel’s specification for Digital Thermal Sensor (DTS) response time is 256 milliseconds, or about 1/4th of a second. Since Windows has dozens of Processes and Services running in the background, it’s normal to see rapid and random Core temperature “spikes” or fluctuations, especially during the first few minutes after startup.

However, 6th Generation processors introduced "Speed Shift" technology in Windows 10, which responds faster to changes in workload than "SpeedStep" due to having many more Core speed and Core voltage levels. Since 7th Generation Speed Shift is twice as fast as 6th Generation, some i7 7700K users complain of severe Core temperature spikes which cause fluctuations in fan RPM at idle.

Here's a link to our sister website, AnandTech, where they've nicely described and illustrated Speed Shift: Speed Shift v2: Speed Harder - http://www.anandtech.com/show/10959/intel-launches-7th-generation-kaby-lake-i7-7700k-i5-7600k-i3-7350k/3

The problem you've described is well documented. Motherboard manufacturers are currently developing BIOS fixes that include separate SpeedStep and Speed Shift settings with more flexible fan curves and time delay options. The motherboard manufacturer MSI appears to be leading the pack on deploying these fixes.

Here's a link to Intel's Forums where this problem is currently being discussed: Thermal sensor issue i7-7700k? - https://communities.intel.com/thread/110728?start=585&tstart=0

See page 40 for my comments, and pay close attention to comments by "TGrable". Also, you might want read this Sticky: Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

CT :sol:
 
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bostonkris34

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Mar 9, 2017
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My only concern here is, my computer wasn't noisy this morning. Now all of a sudden it's almost unusable due to the fans. Is that consistent with what you are talking about? Also - my motherboard "Temp #4" is much higher than the other three Temps in C LINK (I'm not sure what these different temps mean). I have seen it jump to 70 degrees for no reason. Perhaps it's not the i7 that's even the problem...?



 
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CompuTronix

CompuTronix

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What was your ambient temperature in the morning compared to later when the problem appeared?

A simple increase in ambient temperature or internal case temperature can cause this problem to occur.
 
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bostonkris34

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Mar 9, 2017
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well it definitely got warm here in Boston in the middle of the day, but was cool late at night when I was still experiencing it.

this morning I fired it up again, also cool, and it didn't boot. I got a black screen with a blinking cursor in the upper left corner. I restarted with the reset button a few times and then it brought up windows.

so now I'm very concerned there is something wrong with her...




 
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bostonkris34

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Sorry, one more piece of info that I didn't think was relevant, but maybe it is. I can't believe it, but I broke a single blade off one the fans of my brand new ASUS Strix 1080 ti (I can't believe it). Do you think it's possible that creates an imbalance that could lead to these other issues??
 
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bostonkris34

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Yeah... I think you may be right about repairing it... still SO upset I broke a brand new card!

In other news though, last night I ran the computer without the GPU installed and had the same issues. On a whim, I backed everything up and reset Windows 10. I haven't done much with it because I had to leave for work, but when I powered it up this morning, no issues, and fans were whisper-quiet. So... could it have been software, driver (or even virus) related??? Something causing my fans and temps to go out of whack?

Who knows, perhaps not all is solved once I use it more, but simply powering it on caused crazy rpms before I reinstalled Windows. So I'm hopeful.
 
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CompuTronix

CompuTronix

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If you haven't yet run Windows 10 updates, then the problem may return, since Speed Shift runs on a Windows 10 driver, which may not yet be downloaded and installed. On the other hand, if after you run all the updates and the problem doesn't return, that would point toward an OS or App software issue such as a Process or Service using CPU resources, or perhaps even a virus.
 
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bostonkris34

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Once again, very interesting. You know your stuff! Supposedly it did automatically install a bunch of updates, but perhaps not that one. I'll do some tinkering tonight / this weekend and let you know in case you are curious how it all turns out. Thanks again!

P.S. I asked ASUS if it's bad to run the card with one missing blade on one fan, and this was their response: "I guess you can remove the fan which is not working or just leave it as it is. Because if it's not spinning, there's no chance the the other blades will throws off. But if it's spinning, yeah there's a small small chance for the blades to throw off balance" - To clarify, it was still functioning and spinning when I decided to remove the entire card per your guidance. Perhaps I can just disable that fan, but likely will have it repaired.
 
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