i7 6700k High Idle and Load Temps

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drxuess

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Feb 1, 2015
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Hi all,

Thanks for checking out this post and taking the time to read it. I've recently purchased myself a brand new i7 6700k with a ASUS Z170I Pro Gaming and the new corsair H5 SF Water cooler.

However, for some odd reason, upon boot, the idle temps of the cpu sit at around 41C to 45C and HWMonitor shows the voltage sitting at around 1.35V with the frequency constantly at 4.2GHz. Even worse when I put it under stress test with occt, the temps rocket to 100C in a few seconds and all 4 cores stay there.... I've already thought of a few problems that it may have and I have already tried the following solutions (and none of them worked) after looking through a few posts:

1. Reapplied the thermal paste a few times using different methods (X, Pea, Spread) etc.

2. Switched out the H5 SF for my definitely working H100. Idle temps dropped to around 30 - 35C. however voltage and frequency were both still sitting at 1.35V and 4.2GHz constantly.

3. One TomsHW poster said that it was because his backplate for his CPU was too tight, and I gave that a try too by loosening it, but it didnt work.

4. One TomsHW also suggested manually reducing the clock to less. And so I changed the voltage to 1.25V, however the situation is still the same...

I completely out of options and even if there is a defective unit, at this point I don't know if its the CPU, the Mobo or the cooler....

Any help would be appreciated :)

Cheers,

drxuess
 
Solution
jossrik
What are you stress testing with? If you're running a new/newer Prime95 that might be the issue. As far as the idle temps, run a virus scan as well as malware (Avast and Malwarebytes is fine for these, just checking things off the checklist). The idle temps I wouldn't worry about, however, that 4.2Ghz is supposed to go up and down, make sure that in the bios you haven't disabled speedsteppings and such. Unless you're putting a load on the CPU, it shouldn't stay at any one speed for too long. With the Prime95, look for 26.6 or earlier, later and it puts a strange load on the CPU (I only say it's strange cause I don't remember what it was, but it's something 99% of people won't ever ever use). RealBench or Intel Xtreme Tuning Utility...
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Supermuncher85

Supermuncher85

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There are capacitors both to the north and to the west. When screwing in the cooler make sure you are NOT hitting these, as that might be what's causing the cooler to not sit properly. If you remove the cooler again and check the thermalpaste, it will most likely have very little if any goup on those sides.
 
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drxuess

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Feb 1, 2015
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Hi Supermuncher85,

Thanks for your response. I did take it off and reapply each time and took a look at the thermal paste and it seemed to be spread quite evenly across the surface... None the less Ill give it a try again and try to avoid the capacitors and I'll update this space. However I don't think itll make much of a difference :(
 
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dudio

dudio

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Apr 26, 2015
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My i7 6700k is running at 4.2Ghz as well.
I enabled XMP (RAM optimization) and CPU seem to like to stay at 4.2
No problem..temps are fine. I also had a concern about my voltages, but seems it's not so unusual after all.
I hit 1.383 quite often at load and my CPU thanked me. Enjoy
 
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jossrik

jossrik

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Sep 26, 2002
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What are you stress testing with? If you're running a new/newer Prime95 that might be the issue. As far as the idle temps, run a virus scan as well as malware (Avast and Malwarebytes is fine for these, just checking things off the checklist). The idle temps I wouldn't worry about, however, that 4.2Ghz is supposed to go up and down, make sure that in the bios you haven't disabled speedsteppings and such. Unless you're putting a load on the CPU, it shouldn't stay at any one speed for too long. With the Prime95, look for 26.6 or earlier, later and it puts a strange load on the CPU (I only say it's strange cause I don't remember what it was, but it's something 99% of people won't ever ever use). RealBench or Intel Xtreme Tuning Utility are good places to start with putting a load on your processor. Get back, still lotsa tips tricks and engineering to take advantage of.
 
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