Airflow in my H440 tower

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Dec 11, 2014
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Hey guys, I'm having a tough time deciding on the best possible way I can manage the airflow in my case.

I have the NZXT H440, and I own a few Corsair AF120 and SP120 fans, and some other various NZXT and Swiftech branded fans, however I cannot seem to optimize my airflow in this case.

The CPU temps will jump from 30 to upper 60s (sometimes in 70s) in Celsius which, I feel like is a little weird due to the fact that I was able to overclock my 4770k higher and be provided with better temps.

Some things to note, I DID use the built-in Asus Overclocking tool just to test it out because I haven't had a chance to sit down and manually overclock it yet. I've seen the voltage on the CPU get up to 1.3v, but I'm unsure if that's high for the 6700k.

Currently, the airflow is set up as the following:
- 3 stock NZXT 120mm fans up front as intake
- 3 Corsair SP120 120mm fans up top as intake
- 1 stock NZXT 140mm (high airflow) fan in the back for exhaust

There are only 7 spots to install fans that I'm aware of, how would you guy recommend I approach this?

Also, should I use the low static pressure fans in the front or the high airflow? It's having the pull air through the relatively small vents on the frontside of the case.

Here is the NZXT page for the case: https://www.nzxt.com/product/detail/143-h440-performance-mid-tower.html

Here is a picture of the build: http://imgur.com/FE0c76S
 
Solution
While there's some concern about the airflow in the case, it shouldn't be that bad, as geofelt said.

Static pressure or higher volume is better for coolers and radiators, where it has the push the air through the rad. Air flow or lower volume is better for moving air in/around/out of a case, such as your intake and exhaust. That said, I would be looking for some SP fans for the radiator and using the AF fans for the intake and exhaust at the front and rear of the case. While I have a 4790k, I had the stock fans in the front and stock fans from my x61Kraken on the rad and it worked just fine. I only changed out the front fans because they fit the theme of the build a little better.
I do not think you have a temperature problem that needs fixing.
1.3v is very good for Skylake, even 1.4 is ok.

I think the you would be better off with the radiator for the cpu cooler to be an exhaust, taking in air from within the case and expelling it out the top. That will let the front intakes draw in fresh air better. Yes, the cpu cooling might be less, but Skylake really does not need much cooling. More intake airflow will help your motherboard cooling and give your graphics card more cooling air.

If you wish, you could use higher rpm fans as intake in front, but it will increase noise as a tradeoff.

Still, do you really need a temperature fix?
If your cpu stays under 85c. under load, (or even 100c) it will not throttle.
 


Thank you for the reply!

I was not aware that the temps here were pretty standard for Skylake.

Do you think I should use the High Airflow or Low static pressure fans in the front?
 
While there's some concern about the airflow in the case, it shouldn't be that bad, as geofelt said.

Static pressure or higher volume is better for coolers and radiators, where it has the push the air through the rad. Air flow or lower volume is better for moving air in/around/out of a case, such as your intake and exhaust. That said, I would be looking for some SP fans for the radiator and using the AF fans for the intake and exhaust at the front and rear of the case. While I have a 4790k, I had the stock fans in the front and stock fans from my x61Kraken on the rad and it worked just fine. I only changed out the front fans because they fit the theme of the build a little better.
 
Solution

I think that is a minor concern.
It is mostly the RPM of the drives and the diameter of the blades that produce airflow, the higher, the more airflow. And... at a tradeoff of increased noise.

I know there are some more subtle tonal aspects of fans and some effectiveness differences with high/low pressure
fans. But all in all it makes little difference.