I have questions about iTX fan placement and am wondering if the hot air inside of my case could effect the motheroard?

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sm620

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Oct 18, 2012
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I have an iTX form factor computer (I will list links to the parts on newegg for reference), but currently my intake fans are 2 from my GPU and one that runs through the CPU radiator. The consequence is that unless I force the CPU fan to run in overdrive, it is hard to get cool air into the computer when both the GPU and CPU are under high load. I've tried reversing the CPU cooler fan to pull in hot air from the graphics card, but that only hurts the temperature readings.

Cooler master suggests flipping the PSU to allow it to play a role in exhaust, but I have a noctua 80mm fan that seems to push most of it out

I also modified my case to have vent holes in between the PSU and GPU as well as reducing restriction on the GPU fans and adding mounting for the thicker 80mm fan used for exhaust.

Does anyone have any ideas for either cooler intake somewhere or possibly an idea as to whether the hot air flowing through the case could damage motherboard components over time?

Parts:
Case https://www.newegg.com/Product/Product.aspx?Item=N82E16811119286
GTX 780 https://www.newegg.com/Product/Product.aspx?Item=N82E16814121779
i5 4670K CPU
CPU water cooler(closed loop) https://www.newegg.com/Product/Product.aspx?Item=N82E16835181030
Motherboard https://www.newegg.com/Product/Product.aspx?Item=N82E16813132039
then the rest is gaming ram(not overclocked), a HDD, and an SSD to boot from and play games


 
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Vic 40

Vic 40

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Oct 22, 2013
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This i do not get. The case comes with a 120mm fan at the front and one 80mm at the back. Are those not connected to the motherboard? The motherboard comes with three fan headers so there are enough connectors.
 
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sm620

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Oct 18, 2012
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idle CPU is 37C, load on aida64 is around 65C, and prime 95 pushed it to 85C
my GPU usually stays around 60 while gaming and idles at about 28C
I have quiet fan profiles set up, so with the exception of Prime 95 the fans on everything else ran below 50%

I have this fan in the front*intake*( https://www.amazon.com/gp/product/B00KESS6O0/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1 )
and this on the side*exhaust* ( https://www.amazon.com/gp/product/B00NEMG62M/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1 )

I am more concerned about non essential components, for instance the VRM on the motherboard or any chipsets that could be effected by hot airflow inside of the case.

My GPU VRM typically runs at 75C while playing video games. Although I read online that with my graphics card that reading may be incorrect due to sensor placement, so who knows if that's actually the case or if the heatsink is poor around the VRM
 
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SkyNetRising

SkyNetRising

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Jan 4, 2016
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Those are pretty good temperatures for such a compact system.
Try flipping 80mm fan to intake mode and see, how that changes things.
 
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sm620

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Oct 18, 2012
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I'm not sure, I think I had it that way when the case came stock and i ended up flipping it to help the air move away from the GPU as it is an aftermarket cooler design and I lost a card in this case which had a processor temp of 72C at the time of failure(I was watching it to monitor the temperatures). That's why I'm concerned about hot zones rather than temperature sensors.

If I flip that fan I think I would need an exhaust somewhere, preferably where the PSU is, but I have not flipped it to where the fan blows into the PSU because I don't want to wear it out by running hot air through it. I may just be paranoid about that however because cooler master recommends that in their water cooled CPU setup, I may need to find a thermometer to use or something to see how hot this air moving through the case is. It feels pretty hot, but I'm not sure how hot. I would imagine It would have to be cooler than my hottest component
 
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