High temperatures with water cooling

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eremini3

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Nov 9, 2015
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Hello everyone!
Let me describe my cooling set-up first
1. CPU Water Cooler Deep Cool Captain 120. On top of the case. Radiator -> Fan -> Case . Fan blowing out.
2. Fan in front blowing in.
3. Fan on the back blowing out.
3. Fan on the side blowing in.
4. CPU i7-4790K

Non-overclocked 100% cpu use - 75-80C . Overlocked even a bit, goes above 90C, so had to revert to stock.

Questions
1. Is the water cooling on case correct? Or should be be Fan -> Radiator -> Case . Or blow in may be?
2. There's another spare space on top next to the CPU one. Worth adding another fan or no point?
3. Anything else I can do to reduce temperatures? Or is the cooler really that crap?

Thanks IN advance!,
Ilya
 
Solution
4Ryan6


I personally would never plug a pump into a CPU header, I would use a power cable adapter and get the pumps power directly from the power supply.

There is no way the Deep Cool Captain 120 is sufficient for an overclocked 4790K, a Noctua NH-D14 will outperform that cooler.

Read This Please

Then scroll all the way down to the last link in the post, it is a link to an overclocking study and one of the CPUs tested in the study is a...
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rubix_1011

rubix_1011

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Jan 12, 2007
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A 120mm radiator isn't going to do very well on an overclocked 4790k, but it sounds like the pump isn't moving coolant. Are you certain the pump is plugged into a header to provide power? Is the pump vibrating as if it should be moving coolant? Can you detach the radiator and tap it and rotate it?

You could have an airlock - this is when an air bubble is preventing the pump from moving coolant.

That being said, I'm not a fan of any closed loop coolers given how poorly their pumps and radiators are built.
 
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eremini3

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Nov 9, 2015
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Thanks for the answer. The pump is plugged into CPU_2 and it pulsates with colour, so at least it's showing as working. I will try detaching and replacing it later on. Can you recommend a good cooler for 4790k please? Air or water doesn't matter, but one with good overclocking potential.
 
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4Ryan6

4Ryan6

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Apr 14, 2002
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I personally would never plug a pump into a CPU header, I would use a power cable adapter and get the pumps power directly from the power supply.

There is no way the Deep Cool Captain 120 is sufficient for an overclocked 4790K, a Noctua NH-D14 will outperform that cooler.

Read This Please

Then scroll all the way down to the last link in the post, it is a link to an overclocking study and one of the CPUs tested in the study is a 4790K.

Look at the cooling solutions they used in the study to give you a comparative as to how far you can expect to overclock your 4790K and what kind of cooling solution will get you to your overclocking expectations.

What you will learn in that overclocking study is what is required cooling for each level of overclock, so since some of those cooling solutions in that study are way past you getting into, you will be settling for as high an overclock as the cooling you choose to run will allow you to reach.

Good Luck to You! Ryan

 
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