Case fan supposed to push air in or out ?

I

Iplayloud

New Member
Yeah when it pushes air out all the USB ports and connectors act like air filters and become full of dust, can I reverse it and push cold air inside instead ?
 
it has to go in and out. that's why it's called air FLOW. it doesn't matter the direction.
 
is it better to have negative or positive air pressure in your case cuz im thinking about flipping my top fan to become an intake, but heat rises so that might be bad and my back is already exhaust. i only have one fan blowing air into it, which i had to buy extra
 
Out back, out top side, and out the top.
In front, and in on lower side, or right above the CPU.

Best to have negative pressure, then hot spots are removed.
 
Jet said:
Out back, out top side, and out the top.
In front, and in on lower side, or right above the CPU.

Best to have negative pressure, then hot spots are removed.
Click to expand...

well good cuz thats wat i have now


120 pushing air in(the extra i bought from thermal take) and 2 TriCool pooling out
 
Jet said:
Out back, out top side, and out the top.
In front, and in on lower side, or right above the CPU.
Click to expand...
If you only have one side hole, then it should be an intake.

Best to have negative pressure, then hot spots are removed.
Click to expand...
No, positive pressure is better. Then it forces the hot air out.
 
Your power supply blows air out the back. If you were to change your other fans, you'd neutralize the fan on the PSU and possibly cause it to overheat...
 
The_Other_One said:
Your power supply blows air out the back. If you were to change your other fans, you'd neutralize the fan on the PSU and possibly cause it to overheat...
Click to expand...

well with th p180 theres a seperate chamber on bottom for PSU and HDD and theres one fan down there making a wind tunnel sort of. in the main chamber put one fan in front pushing air out and a fan in top back and top panel in back pulling air out. theres no where else for fans

http://www.newegg.com/Product/ShowI...HDD+area+ATX+Mid+Tower+Computer+Case+-+Retail

look at 5th from last pic. both those blowing air out. and in others you'll see that theres 2 3.5" drive bays. i put a fan where the bay in the main chamber is
 
Bobo said:
No, positive pressure is better. Then it forces the hot air out.
Click to expand...

True,.. but also, if there is 'negaative'pressure in the Case, the fans inside will spin faster because they have less friction resistance from the air, meaning the fans will also be more noisy. :) (personal experience )
 
Iplayloud said:
Yeah when it pushes air out all the USB ports and connectors act like air filters and become full of dust, can I reverse it and push cold air inside instead ?
Click to expand...
if you have fans pushing air outside the case air still finds it way inside the case, if you install fans that push air inside the case air fill still find its way out.
air must be flowing inside and out to change warm air to cool air.
 
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