Fan setup

[matthewmarchant]

Okay so I just setup my computer 5 days ago and I already see alot of dust.  I suspected it may be because of my fan setup.  I have an s340 and a fan in the rear and the top both pulling air out of the case and a 120 radiator fan pulling air through the rad and out the case.  Should I have a fans pushing air into the case or is this fine?

[Redsun20]

Okay so I just setup my computer 5 days ago and I already see alot of dust.  I suspected it may be because of my fan setup.  I have an s340 and a fan in the rear and the top both pulling air out of the case and a 120 radiator fan pulling air through the rad and out the case.  Should I have a fans pushing air into the case or is this fine?

You should try to get positive air pressure. Meaning, have more intakes than exhausts. IF you have negative air pressure, it is sucking in air from all of the little holes in the case, increasing dust buildup exponentially.

[matthewmarchant]

You should try to get positive air pressure. Meaning, have more intakes than exhausts.

so put an intake below the rad?

[Joemoma]

I forget the rule-of-thumb exactly.. but i thought it was somewhere along the lines of wanting to have more air coming into the case than is being pulled out.  and i remember 1 200mm fan = 2 120mm fans...  so i personally would try to add some intake fans,

 

or possibly reverse your rear exhaust into a rear intake

[matthewmarchant]

I forget the rule-of-thumb exactly.. but i thought it was somewhere along the lines of wanting to have more air coming into the case than is being pulled out.  and i remember 1 200mm fan = 2 120mm fans...  so i personally would try to add some intake fans,

 

or possibly reverse your rear exhaust into a rear intake

wait so reverse the one on the back or the top?

[Redsun20]

so put an intake below the rad?

No no no. Put it in the front of the case

[ForsakenLive]

Get 2x 140mm intake fans, keep the top onein exhaust, and put the rad in the back in exhaust as well. PSU facing down.

[Redsun20]

Get 2x 140mm intake fans, keep the top onein exhaust, and put the rad in the back in exhaust as well. PSU facing down.

This would be a good idea so long as you could fit it and power it

[matthewmarchant]

No no no. Put it in the front of the case

the rad is in the front of the case

[Redsun20]

the rad is in the front of the case

OHhhhhhhhhhhh OK. Yes those should DEFINITELY not be exhaust. Generally you want air going from the front to the top back of the computer. A general rule of thumb. ALWAYS have the front be intake

[matthewmarchant]

Get 2x 140mm intake fans, keep the top onein exhaust, and put the rad in the back in exhaust as well. PSU facing down.

Could I do 1 140mm in the front as intake rear in exhaust top in intake and rad in front as exhaust

 

Never mind.

[matthewmarchant]

Wait so how could I keep the rad in the front because I won't be able to move the rad to the back of the case.

[ForsakenLive]

Wait so how could I keep the rad in the front because I won't be able to move the rad to the back of the case.

 

This would be much easier with an ugly drawing! I'll begin.

 

My idea of an ideal fan setup in the s340, using a 120mm rad.

Beware! MS Paint.