Air Pressure Control

[JLCitadel]

I have:

Define R4 Black Pearl

Corsair H100i

2x Corsair SP 120mm Fans

4x Corsair AF 120mm Fans

2x Fractal Silent Series R2 Fans

 

Case holds a max of 7 Fans.

 

How should I configure my fan setup for positive? air pressure to keep dust to a minimum.

[Omon_Ra]

2x AF 120mm's up front (intake), H100i with SP 120's mounted to the top (exhaust). 1x AF 120mm on the rear (exhaust). Use some sort of fan controller to keep the front ones spinning all the time, but ~40-50% (until temps reach a certain level). AIO fans keep on all the time, but as low as possible; again, ramping up with temp. Have the rear fan turn on only when temps get to a certain level as well. That's how I have mine setup. I have an Asus mobo, so the fan controller software on that is hugely helpful. I just cleaned out my rig (had to RMA the PSU..grr) and there was a bunch of dust on the filters, and just a tiny bit inside the case itself so it seems to work fine.

[NotCthulhu]

More intake fans than exhaust.

[JLCitadel]

More intake fans than exhaust.

wouldnt more intake bring in dust..

[W-L]

wouldnt more intake bring in dust..

 

For positive pressure it will prevent dust from entering in small gaps or spaces between the panels of the case but you will need to add dust filters for any intakes to prevent any dust infiltration in the first place.

[LogicalDrm]

wouldnt more intake bring in dust..

 

Not really since you would use filters for intakes. And for overall cooling I'd suggest atleast trying out 2 in, 2 out system. H100i is more than enough of exhaust by itself.

[JLCitadel]

Not really since you would use filters for intakes. And for overall cooling I'd suggest atleast trying out 2 in, 2 out system. H100i is more than enough of exhaust by itself.

 

 

For positive pressure it will prevent dust from entering in small gaps or spaces between the panels of the case but you will need to add dust filters for any intakes to prevent any dust infiltration in the first place.

 

 

2x AF 120mm's up front (intake), H100i with SP 120's mounted to the top (exhaust). 1x AF 120mm on the rear (exhaust). Use some sort of fan controller to keep the front ones spinning all the time, but ~40-50% (until temps reach a certain level). AIO fans keep on all the time, but as low as possible; again, ramping up with temp. Have the rear fan turn on only when temps get to a certain level as well. That's how I have mine setup. I have an Asus mobo, so the fan controller software on that is hugely helpful. I just cleaned out my rig (had to RMA the PSU..grr) and there was a bunch of dust on the filters, and just a tiny bit inside the case itself so it seems to work fine.

 

 

 

 

 

So does this make what powder said a bad idea? 

[LogicalDrm]

So does this make what powder said a bad idea? 

 

No. I like more 2 in, 2 out or more in than out idea. But how air pressure inside case works is about cfm. So if you have front intakes running so fast that they are constantly bringing more air than what exhausts are taking out its same as if there would be more fans intaking than exhausting.

 

Calculating how much cfm each fan delivers in certain rpm is simple math. You can find those ratings on fans specs. Listed cfm's are for full speed.

[JLCitadel]

No. I like more 2 in, 2 out or more in than out idea. But how air pressure inside case works is about cfm. So if you have front intakes running so fast that they are constantly bringing more air than what exhausts are taking out its same as if there would be more fans intaking than exhausting.

 

Calculating how much cfm each fan delivers in certain rpm is simple math. You can find those ratings on fans specs. Listed cfm's are for full speed.

 

Oh alright, simple enough. Thanks for your help everyone

[.spider.]

Calculating how much cfm each fan delivers in certain rpm is simple math. You can find those ratings on fans specs. Listed cfm's are for full speed.

You should keep in mind that the intake fans are running against the case impedance and the outtake fans are getting boosted by the intake fans and the outtakes fans are running against the radiator impedance.

Its not that easy to calculate.