Static Pressure / Air Flow

[mrmiller]

Hey

I want to be sure of something. I'm going to replace my stock fans (2X) with 4X Silent Wings 3 PWM High Speed (BL070)
this is my case H230 NZXT (not my photo)

so now I want to be sure, I want to put these like this but the question is this the right fan for the rear? (number 4) I read something about "Static Pressure / Air Flow" and I'm not sure I'm doing the right thing
I don't want my rear fan to push the bad air back in

 

[jay32267]

I think fan 4 should blow out of the case (if that's your question). Most of the PCs I run are set up this way....and it makes sense that you want to blow the hot air at the TOP of the case out.

 

[Eximo]

That would be the typical setup.

And since you have an overwhelming number of intakes to exhausts you will want that exhaust fan to move as much air as possible.

Static pressure fans are for pushing air through obstructions, like radiators and heatsinks.

 

[mrmiller]

I think fan 4 should blow out of the case (if that's your question). Most of the PCs I run are set up this way....and it makes sense that you want to blow the hot air at the TOP of the case out.

I ask the question because there are several types of fans who do different work
now I bought 4 fans and they all do the same work, should the fourth fan have to be different from them?
which takes the air out or something? or it's ok that all 4 are the same?

 

[jay32267]

I have all the fans the same on all my cases.

The bottom line is....that you get the cooling you want.

That's it. Nothing else matters.

All you want to do is keep your components cool enough so they won't get damaged.

That's generally not that hard in a desktop chassis.

 

[mrmiller]

I have all the fans the same on all my cases.

The bottom line is....that you get the cooling you want.

That's it. Nothing else matters.

All you want to do is keep your components cool enough so they won't get damaged.

That's generally not that hard in a desktop chassis.

sound good! thanks
one more thing that I want to one.. is how can I know which side is the air coming in or out?

 

[jay32267]

There is usually an arrow on the outside of the fan enclosure that points in the direction of airflow.

Sometimes there is another arrow that shows which way the fan spins as well. You can use this to figure out which way the air goes as well.

The arrows are usually embossed in the plastic frame.

 

[mrmiller]

There is usually an arrow on the outside of the fan enclosure that points in the direction of airflow.

Sometimes there is another arrow that shows which way the fan spins as well. You can use this to figure out which way the air goes as well.

The arrows are usually embossed in the plastic frame.

alright, thank you!

 

[Eximo]

If there are no arrows the fan always blows towards the hub. The frame that holds the fan motor to the rest of the fan body. Or always towards the label as another way to put it.

 

[mrmiller]

If there are no arrows the fan always blows towards the hub. The frame that holds the fan motor to the rest of the fan body. Or always towards the label as another way to put it.

there are no arrows by this video "HERE"

1

2

so which way the air come in or out?
I mean which need to look inside and which need to look outside

 

[Eximo]

Towards the label. In the first screen shot away from the camera. The bottom screenshot, at the camera.

It is binary, you could just power it on if you aren't sure from the directions given.