Fan placements for best airflow

[Seb3n]

I bought 4 high air flow fans, and I am wondering where to put them, let me know how you would have done i my situation, or where you would recommend me to place the fans.
Here are my options for placements in my case, though I only have 4 fans:
2 Top placements.
2 Front (1 fan have have plastic JUST in front of it, so I am wondering if that will make it useless?)
1 Bottom.
1 Back (no wall behinde it or anything)
all except the 'back' have mesh filters, to filter dust.

Thanks in advance!

 

[MrKrako]

1-Back pushing air away (no need of dust filters beause is pushing air out of the case)
1-Front pulling air inside the case
1-Top pushing air out of the case
1-Bottom pulling air inside the case

You can even put two of them pushing hot air outside of the case in the top, instead of 1 bottom-1top. That would create negative pressure inside your case that would suck in "fresh" air. That's up to you, both are good configurations in my opinion.

 

[NerdIT]

1-Back pushing air away (no need of dust filters beause is pushing air out of the case)
1-Front pulling air inside the case
1-Top pushing air out of the case
1-Bottom pulling air inside the case

You can even put two of them pushing hot air outside of the case in the top, instead of 1 bottom-1top. That would create negative pressure inside your case that would suck in "fresh" air. That's up to you, both are good configurations in my opinion.

I agree -but the setup you are proposing is positive pressure.. easy way to think is if all fans were exhaust -that would be a super negative pressure setup. If you have all side but the back (and maybe top) that is positive pressure forcing the heat back/up. Remember heat rises naturally. I would run back and top as exhaust -and anything else as intake.

 

[Seb3n]

1-Back pushing air away (no need of dust filters beause is pushing air out of the case)
1-Front pulling air inside the case
1-Top pushing air out of the case
1-Bottom pulling air inside the case

You can even put two of them pushing hot air outside of the case in the top, instead of 1 bottom-1top. That would create negative pressure inside your case that would suck in "fresh" air. That's up to you, both are good configurations in my opinion.

That was my thought originally, but would 3 cm be enough for it to bring in a decent amount of air?

 

[Bearmann]

With 4 fans, you're going to get good cooling no matter what you do. I would probably go with 2 front intakes, 1 rear exhaust, and 1 rear roof exhaust to get the best CPU cooling since the GPU cooling is about the same in all configurations which do not use a side fan. However, if you want a quieter build, then go with 2 fronts, 1 rear exhaust, and 1 floor intake.

http://www.bit-tech.net/hardware/2012/02/10/the-big-cooling-investigation/7

 

[MrKrako]

1-Back pushing air away (no need of dust filters beause is pushing air out of the case)
1-Front pulling air inside the case
1-Top pushing air out of the case
1-Bottom pulling air inside the case

You can even put two of them pushing hot air outside of the case in the top, instead of 1 bottom-1top. That would create negative pressure inside your case that would suck in "fresh" air. That's up to you, both are good configurations in my opinion.

I agree -but the setup you are proposing is positive pressure.. easy way to think is if all fans were exhaust -that would be a super negative pressure setup. If you have all side but the back (and maybe top) that is positive pressure forcing the heat back/up. Remember heat rises naturally. I would run back and top as exhaust -and anything else as intake.

That's what i said. 2 intakes (front and bottom) and 2 exhausts (back and top). What i suggested, as an option was: 1 intake (front) and 3 exhausts (1 back and 2 top). That creates negative pressure without a doubt. Sorry if i didn't manage to make my point clear.

 

[Seb3n]

With 4 fans, you're going to get good cooling no matter what you do. I would probably go with 2 front intakes, 1 rear exhaust, and 1 rear roof exhaust to get the best CPU cooling since the GPU cooling is about the same in all configurations which do not use a side fan. However, if you want a quieter build, then go with 2 fronts, 1 rear exhaust, and 1 floor intake.

http://www.bit-tech.net/hardware/2012/02/10/the-big-cooling-investigation/7

When you say 2 front intake, do you also mean the one with plastic in front of it?

 

[NerdIT]

Rule of thumb - all fans on front and/or bottom use as intake- and any rear/top fans as exhaust. Imagine pulling fresh cool air in through the intakes -and the exhaust naturally pushing heat out back and/or rear. This is what you want.

 

[alessandrofcbarcelona]

Hey I also have 4 fans. Is my placement good?

2 in the front sucking fresh air
1 in the back blowing hot air out
1 in the top blowing hot air out. I have 2 spots where I could put the top one. Should I put it in the top back or top front?