[SOLVED] Is one 120 mm exhaust enough, if i'm using 2 140mm intakes?

[gosupalanta]

Hello !

I currently have 3 120mm Corsair SP120 fans as intake, and 1 as exhaust in my Meshify C TG build. Because of the noise, i am changing my intake fans to 2 140mm Corsair HD140 fans.

My question is, will only 1 120mm fan be enough as an exhaust, if i use 2 140mm intake fans?
My CPU cooler is a Dark Rock Pro 4 (which pushes the hot air out to the exhaust fan).

Also the intake fans are in the front, and the rear is in the back.

Thank you in advance.

 

[feelinfroggy777]

Yes, two for the front and one for the back should be fine. Most intake fans have a lot of air flow restrictions due to the case whereas the exhaust fan typically has very little restrictions, not even a screen. So in many cases, 2 intake can bring in about as much as 1 can exhaust.

140mm fans dont bring in more air, they just move more air at lower RPM, so they are quieter.

As far as fans go, I am a big fan (no pun intended) of the corsair ml fans. They are very quiet. The SP fans sound like helicopters. But the ml fans are high, so there is always a trade off.