Turning NZXT H440 rear exhaust into intake?

[Kameegaming]

as title says I am planning to turning the rear exhaust into an intake (with filter) 

 

I have 3 noctua industrial 3000pwm fans as intake at the front running at around 1400 rpm and a celsius s36 at the top as exhaust, 3 fans. 

 

to achieve positive air pressure I want to add one more intake, but can only do it at the top rear exhaust corsair af140 mm, is this a bad idea? 

 

will there be too much turbulence? 

[lefudgelover666]

itll be fine since theres no cpu air cooler in the between. this was a very common setup with the Corsair 800D that had abysmal airflow, 

[RollinLower]

yeah this shouldn't affect performance in a bad way. if anything, the extra flow directed towards your radiator might help with CPU temps a bit!

[LogicalDrm]

It doesn't do much either way. Air coming in will be immediately sucked out by top fans. Rather than add any more fans, adjust speeds so that intake moves more air than exhaust.

[Kameegaming]

8 minutes ago, LoGiCalDrm said:

It doesn't do much either way. Air coming in will be immediately sucked out by top fans. Rather than add any more fans, adjust speeds so that intake moves more air than exhaust.

So it will directly supply the radiator, I am fine with that to be honest.

[LogicalDrm]

Just now, Kameegaming said:

So it will directly supply the radiator, I am fine with that to be honest.

There's literally nothing between it and rad which would be causing anything. Imo you aren't going to see any difference in temps and frankly I doubt you will see difference in dust build-up either.

[Kameegaming]

3 minutes ago, LoGiCalDrm said:

There's literally nothing between it and rad which would be causing anything. Imo you aren't going to see any difference in temps and frankly I doubt you will see difference in dust build-up either.

Well I already have the fan, well I have multiple fans and the filter costs like 3 euros so it's really not much of an investment for trying to achieve slightly better positive air pressure.

[WoodenMarker]

13 hours ago, Kameegaming said:

Well I already have the fan, well I have multiple fans and the filter costs like 3 euros so it's really not much of an investment for trying to achieve slightly better positive air pressure.

The only point in aiming for positive airflow is to decrease dust build-up. Unless the rear fan is filtered, flipping it to intake will only pull in more dust.