Top Intake fans?

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Oct 26, 2013
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10,510
I have a silent case Corsair 330r, chose it because its mostly closed. I live in a city where dust is everywhere so this case was perfect for the job. Besides my city is extremly hot in summer days we can reach 125°F.

Now the problem is because its design to be closed it gets warm inside faster.
I am trying to decide which is the best fan configuration without taking the top off, to keep it silent. Currently I have the stock fans that came with the case 140mm front intake and 120mm back exhaust.

I do know that in the top there is space for 2 fans but I dont know if the fans can work with the top on, or if I can use somekind of radiator.




 
Solution
If you don't use you computer much, then the top vents would accumulate dust inside. It is much more important to have dust filters on the intakes.

In summary, I would have two 140 mm fans as front intakes and three 120mm fans as exhaust fans in the top and rear. I would control all of them on the motherboard, plus your CPU cooler.
I would put a couple of quiet exhaust fans in the top with it open. The high pressure technique (with an extra top intake) doesn't work that well. If you control the RPM of the fans , it will be quiet. Plus you have the option to close them off again.
 

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Oct 26, 2013
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10,510


So I leave it with 3 exhaust and 1 intake?
And what happens if I close the lid?
 

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Oct 26, 2013
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If I put 140mm wouldnt it be better?
Other thing, do noise passes through the fans? Cause I can put some powerful 140mm intakes on the front put I dont know if theyll make a lot of noise
 
The 140 mm fans are more expensive for one thing. And there not really needed. I have a n Antec P280 (another quiet case). It has two 120mm fans on top. It cools very well. There are seven fans on this system. It cools very well. All of the fans are RPM controlled. During normal use, you can't really tell that it is on (from the sound).
You can hear the fans when it boots, before the windows application loads. After that it goes quiet.
 
If you close the top, off the top fans should be turned off, or way down.

The primary noise that you are going to hear is from the front of the case. The sound that comes from the top and back bounces of several surfaces before you hear it. This both reduces and muffles the apparent noise.

I would rather have two front intake fans. Note that the air vents out of the rear ventilation holes as well as the exhaust fans. The front fans are behind the sound dampened door.
 

Karadjgne

Titan
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Personally, I'd go with 2x 140mm in front, and 2x 120mm exhaust up top, and forget about rear exhaus. This offers the best airflow solution, as the lower intake will be obstructed by the HDD cage partially. The rear exhaust would be fine if leaving the lid on, but with top exhaust, its a little counter productive to try and vent upwards moving air/heat sideways. Having more intake than exhaust will also keep positive pressure inside the case. This is very important for dust issues as the positive pressure will want to bleed out, not in. A negative pressure is commonly known as a vacuum, and its not a good idea, especially in dusty climates, for the pc to act like a vacuum.
 

Dark Lord of Tech

Retired Moderator
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If you don't use you computer much, then the top vents would accumulate dust inside. It is much more important to have dust filters on the intakes.

In summary, I would have two 140 mm fans as front intakes and three 120mm fans as exhaust fans in the top and rear. I would control all of them on the motherboard, plus your CPU cooler.
 
Solution

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Honorable
Oct 26, 2013
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10,510


What if I get a CPU Cooler on the rear my 2 front 140mm intake fans and 2 top 140mm exhaust fans

Will this work silently? And dust free?
 
That would work. It would probably increase the noise though. The radiator would require a high static pressure fan for the radiator to be effective. High static pressure fans tend to be more noisy.

For a quiet setup, I would recommend an air cooled CPU cooler. A tower cooler up to 160mm is supported by the case.
 
Yes, the system is virtually dust free. It has a dust filter on the front intakes. The top isn't a problem normally, because the top fans will be running much of the time. No system is completely dust free, but it will be nearly so. And it should be very quiet.

I love my system after many many years of fan noise. It is very, very quiet.