How do I keep my components cool? - Exhaust vs Intake

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ItsAdamTheHDGamer

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Aug 24, 2014
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I have a Zalman Z11 Plus case and for airflow it's very awful.
It has one 120mm fan at the front (3 pin),
one Molex 120mm exhaust at the back and a 120mm 3 pin exhaust on the top.
My i5 4670K stock is cooled by a Hyper 212 EVO and it hits 50 degrees in Assassins Creed 3.
There is no air getting to the cooler to feed it cool air. So if I were to flip my top exhaust to intake and have it in blowing air on to the 212 EVO will I get better temps?
Also, will I get lower temps if I install a bottom 120mm fan as intake for my ASUS DirectCUII HD 7870?
Thanks,
Adam
 
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The intake and exhaust fans are creating a constant flow of "cool" air through the case. That air is going to be sucked in by the CPU cooler fan. Attempting to blow air towards the CPU fan won't make any difference. Converting one of your exhaust fans to an intake fan is probably going to reduce the flow of "cool" air through the case. Your setup, with two exhaust fans and one intake fan, should be optimum for cooling airflow.

If you want to increase cooling, increasing the speed of the CPU fan would be the most productive change. However, there is a point where even running that fan won't lower the temp under load. In other words, 80% fan speed and 100% fan speed might produce the same temperature. In that case, increasing fan speed...
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hwc1954

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Jan 7, 2015
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I doubt it. Two exhaust fans and one intake fan should be fine from the standpoint of general airflow through the case. That will keep things like drives and other stuff at reasonable temps. A couple of degrees up or down in overall temps isn't going to make a huge difference on CPU cooling temps.

Is a CPU temp of 50C hot under load during intensive gaming? That doesn't sound like a problem to me.

 
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ItsAdamTheHDGamer

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There is no cool air getting to the heatsink. So it's recycling hot air in the case.
 
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hwc1954

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Jan 7, 2015
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The intake and exhaust fans are creating a constant flow of "cool" air through the case. That air is going to be sucked in by the CPU cooler fan. Attempting to blow air towards the CPU fan won't make any difference. Converting one of your exhaust fans to an intake fan is probably going to reduce the flow of "cool" air through the case. Your setup, with two exhaust fans and one intake fan, should be optimum for cooling airflow.

If you want to increase cooling, increasing the speed of the CPU fan would be the most productive change. However, there is a point where even running that fan won't lower the temp under load. In other words, 80% fan speed and 100% fan speed might produce the same temperature. In that case, increasing fan speed is just adding noise.

Again, I'm not an expert, but 50C core temps under heavy load soounds pretty darn good. I don't know that you can do much better.
 
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