Question about fan direction (intake/outtake)

ryder553 · Oct 1, 2013

Hello,

I have a Cooler Master Storm Stryker. If you don't know, there's a dust filter on the bottom and on the top of the case.

My question is if I have the intake for my Corsair H80i in the back of the case, what direction of airflow should I create with the other fans (another fan on top, two in the hard drive bay facing to the left side, and I can install the stock rear fan on the bottom)?

Thanks!

markwp · Oct 1, 2013

Easiest answer is more intake than exhaust. You want positive pressure in the case, so configure more cfm pulled in than pushed out.

Mark

Jordan Albright · Oct 1, 2013

the h80 is a all in one water cooler right? i would personally have the radiator fan exhausting heat. you dont want to be blowing hot air into your case i would also mount it higher up if that is possible with your case

das_stig · Oct 1, 2013

The h80i should suck air either through the radiator or push air through the radiator, then both out of the case at the back.

Exhaust fans at the top.

Intake fans front side and bottom.

ryder553 · Oct 1, 2013

Jordan Albright :

The instructions say it is better for the radiator to intake air.

ryder553 · Oct 1, 2013

das_stig :

Can I set it up like this:
-Radiator intake in the back
-Exhaust in the top
-Intake in the bottom
-Intake in the side

Or should I have another exhaust?

Thanks!

markwp · Oct 1, 2013

Yep. But, I would stay away from bottom intake if at all possible - it just sucks dust.

2x120 front intake;
1xradiator rear intake;
1x200 top exhaust;
1x140 from rear to side intake.

Mark

ryder553 · Oct 1, 2013

markwp :

Sorry, what do you mean by rear to side intake?

Instead of the two front intakes would it be ok to have them as side intakes (they're connected to my HDD cages)?

And I guess I'll do the bottom fan as exhaust too.

Thanks for all the help!

P.S. Isn't it kind of weird to have my exhaust fans where all the dust filters are? I feel like you would want a dust filter in front of an intake fan...

Alpha-Black · Oct 1, 2013

i have a H100i and first has fans as exhausts and back fan was also exhaust but floor fan and front was intake but the temps were still between 50-60 without any overclocking. i have Gigabyte sumo Alpha case so it has a steel mesh on side panel. My all fans all means all back front top and bottom are now intakes and only 12x10 inch side mesh is exhaust No exhaust fan is there.
and temps are 25-35 now.
This just crap man that hot air always go up so you have to put fan as exhaust up there.
1. case is close so when for example 2000 rpm fans 2x120mm in my case pulling cooler heaver air in back also 2000 rmp pulling in fron and floor fan also puling in then tell me how lighter hot air will go up or on any side?
2. when all fans are pulling cooler air in then where is the the chance to allow components producing hot air when your system is already a freezer?
3. CPU is the main thing inside a case generating heat your water or liquid pump is on top of it your rad it exchanging heat then how your cup is spreading heat inside the case?
4.when heavy air is all around in the case lighter air will be exhausted from any vent it found. You can build your one air flow from where to in where to out even you can make a vent by removing PCI slot covers.
5. This is very old school thought that hot air have to go up. computer case is very small place make your own flow if you you have a side mesh or side panel fan mounts open with out fans just pull in from all the sides hot air will be exhausted from mesh and remove pci slot covers.
do this and your system will thank you.
6. if you don't have any vent from side or don't have mesh then just make your back fan or floor fan as exhaust and all others intakes.
you will see then difference.
(I'm a Jet Aeronautical Engineer so i know about air pressures very well inside a compound or in outer air and fans intakes and afterburners (exhausts) coz i play with air all the day

markwp · Oct 2, 2013

Sorry for the confusion.

If you are planning to leave the cages in factory position (I would move them 90* to the front, but that's just me), you will have 2x120 side intake. Then you have the factory 1x200 on top as exhaust. When you mount your H60, you will have it's fan as intake and you will remove the 140 from the rear. Since I would have moved the 120's to the front, I would have put the 140 on the side as an intake. In your case, put it on the bottom as intake - just be sure you keep that filter clean, especially if the rig sits on carpet. You might even consider putting the rig on a piece of plexi or other solid surface on top of the carpet to prevent as must dust and air flow restriction as possible.

Mark

ryder553 · Oct 2, 2013

Alpha-Black :

markwp :

Thanks, sounds like a plan!
I think I'll have to get another fan for the bottom because the 140mm won't fit down there.

markwp · Oct 3, 2013

Can you swap the 140 for one of the side 120's?

ryder553 · Oct 3, 2013

markwp :

I don't think so. I tried a CM 120mm on the bottom and it was too large which leads me to believe the screw holes are for an 80mm fan.

markwp · Oct 3, 2013

According to the CM site, the bottom will accept 2x120 fans.

Alpha-Black · Oct 3, 2013

markwp :

Untill now i don't think there is any casing which have 140mm for bottom fan.

Alpha-Black · Oct 3, 2013

ryder553 :

For bottom fan according to my info (i may be wrong) there is no case having 140mm holes 120mm is tops till now you may have 2 vents on floor or 3 but now bigger then 120mm.
But this is a good idea to have 140 or 200mm floor fan.

ryder553 · Oct 6, 2013

Ended up installing a 120mm fan on the bottom. I also had to create my own threads in the Cooler Master fan I used.

markwp · Oct 8, 2013

Glad you got it set up.

Mark

Question about fan direction (intake/outtake)

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