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Batman

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#243733 29-Dec-2018 07:56
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Hi, I have a 3 year old desktop, 6700K overclocked, cooled with Noctua NH D15 (the double fan monster)

 

When I first had it, when maxed out temps would be only 70 degrees

 

Now it's going above 80 degrees ...

 

I am thinking of reapplying thermal paste.

 

I don't think dust is a problem, I have cleaned the dust from everywhere (case is a Fractal R5 which has anti dust mechanism too so very little dust gets in, vents are cleaned)

 

Reminds me now to check the case fans are working ...

 

Thanks





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tdgeek
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  #2151747 29-Dec-2018 08:50
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Added any more componentry recently? That may have altered airflow and created hotspots


PANiCnz
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  #2151753 29-Dec-2018 09:37
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That case and cooler are high end. A good clean and reapplying thermal paste is all that is probably needed.

How many case fans? And where are they mounted?

hio77
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  #2151776 29-Dec-2018 10:54
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i had this happen to my 3770K recently..

 

 

 

The combination of summer being rather hot and a fan stopping made for a very unhappy overclock.

 

Quick blow and replacement fan and it's back in the 40s again.





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Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.

 

 




Batman

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  #2152351 30-Dec-2018 18:48
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tdgeek:

 

Added any more componentry recently? That may have altered airflow and created hotspots

 

 

Hmm yes maxing out a GTX 1080 Ti !





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Batman

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  #2152352 30-Dec-2018 18:49
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PANiCnz: That case and cooler are high end. A good clean and reapplying thermal paste is all that is probably needed.

How many case fans? And where are they mounted?

 

2 Fans mounted to suck air in front and 1 fan push air out back. 





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Batman

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  #2152354 30-Dec-2018 18:51
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hio77:

 

i had this happen to my 3770K recently..

 

 

 

The combination of summer being rather hot and a fan stopping made for a very unhappy overclock.

 

Quick blow and replacement fan and it's back in the 40s again.

 

 

Thanks I think I will just open up the top hatch to cool it down. I am not sure if it needs thermal paste at this stage (too daunting! though I will one day). I was more hoping someone would suggest that I need to de-lid the CPU and apply paste in there. I am reading that the weakest link of the entire crazy cooling set up is the thermal paste between the CPU chips and the CPU lid. 





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  #2152355 30-Dec-2018 18:59
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Is the cooler still properly seated?

It has been freaking hot the last few days.



hio77
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  #2152356 30-Dec-2018 18:59
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Batman:

 

 I was more hoping someone would suggest that I need to de-lid the CPU and apply paste in there. I am reading that the weakest link of the entire crazy cooling set up is the thermal paste between the CPU chips and the CPU lid. 

 

 

upgrade to the 9700k instead, have soldar no need to delid ;)

 

 





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Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.

 

 


Batman

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  #2152360 30-Dec-2018 19:12
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hio77:

 

Batman:

 

 I was more hoping someone would suggest that I need to de-lid the CPU and apply paste in there. I am reading that the weakest link of the entire crazy cooling set up is the thermal paste between the CPU chips and the CPU lid. 

 

 

upgrade to the 9700k instead, have soldar no need to delid ;)

 

 

 

 

Thanks, something to read about :)

 

It still baffles me that we conjure up skyscrapers to cool the cpu that has the footprint of 20c coin, with all heat transferred to skyscraper via some crusty old paste that you cannot get to.





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Batman

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  #2152361 30-Dec-2018 19:13
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andrewNZ: Is the cooler still properly seated?

It has been freaking hot the last few days.

 

I think so, it is screwed on very tightly with some mighty bolts.





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hio77
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  #2152362 30-Dec-2018 19:14
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Batman:

 

andrewNZ: Is the cooler still properly seated?

It has been freaking hot the last few days.

 

I think so, it is screwed on very tightly with some mighty bolts.

 

 

Don't over tighten it now..





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Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.

 

 


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  #2152373 30-Dec-2018 19:42
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Heating/cooling cycles and vibration can loosen fasteners surprisingly quickly. I'd hope the fasteners have a reasonable locking system, but don't discount it.

If it isn't pulled up square it'll feel tight but not be contacting properly. Thermal paste may have been taking up the gap till now.

andrewNZ
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  #2152375 30-Dec-2018 19:44
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You can apparently get thermal pads/sheet now that is supposed to be pretty good and doesn't degrade.

Batman

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  #2152402 30-Dec-2018 21:40
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andrewNZ: Heating/cooling cycles and vibration can loosen fasteners surprisingly quickly. I'd hope the fasteners have a reasonable locking system, but don't discount it.

If it isn't pulled up square it'll feel tight but not be contacting properly. Thermal paste may have been taking up the gap till now.

 

Ok I'll double check. Was sure it was tight when I installed the GTX 1080 Ti





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Batman

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  #2152403 30-Dec-2018 21:41
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andrewNZ: You can apparently get thermal pads/sheet now that is supposed to be pretty good and doesn't degrade.
]

 

Ah yes thanks for reminding me - I saw that on Linus





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