Top 480 intake or exhaust?

Alz_D

Alz_D

Alz_D

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Finally putting together my Phanteks Primo and I'm struggling to decide if I should run the top 480 as intake or exhaust. There will be the two case fans at the front as intake, a 360 in the floor as intake and a 140 probably Corsair AF series exhausting at the back. Theory being that fans pulling air as intake gives it the coldest air and makes it easiest to clean as well. I've googled and read probably 20+ different opinions on the subject. I know heat rises and a lot people swear by exhaust but what are your opinions. If I do go exhaust I could always flip the rear to intake cold air maybe.

Thanks
 
intake.
all this "hot air rises" is a load of hot air lol (pun intended)
yes, hot air naturally rises, but only if there is no external force...ie: if there's a fan blowing down, the hot air will go down, not up.
the forces involved in an area as small as a rad are negligible
have the top as an intake, so it won't recycle heat already in the case, and also help with dust too (assuming there's a dust filter up top)
 
the top grills tend to be very restrictive when used for exhausting because of aesthetics they tend to have plastice cover and so on, the best flow is intake
 
Thanks for the input. It does seem to divide opinion :D

Going to flip my fans and use it as intake and see what happens. This should keep the dust out as well which has got to be a good thing. Hopefully I can start to build it tonight!
 
My case is running with negative pressure 8 exhaust (actually 11, but 3 pairs are push/pull so same exhaust) and only 3 as intake
I'm using the top as exhaust, but I removed the filter from the mesh.
Bottom and back is as exhaust as well and I'm not using the filters.
I'm only using filters on intakes.

So basically any hole that doesn't have a fan in my case is an intake.
 
Drangueos said:
My case is running with negative pressure 8 exhaust (actually 11, but 3 pairs are push/pull so same exhaust) and only 3 as intake
I'm using the top as exhaust, but I removed the filter from the mesh.
Bottom and back is as exhaust as well and I'm not using the filters.
I'm only using filters on intakes.

So basically any hole that doesn't have a fan in my case is an intake.
Click to expand...

You've got the primo too - just clicked your build log. Looks like they have changed the res bracket on the orange version. It has more of a cut out than yours had before you improvised :p
 
Drangueos said:
So basically any hole that doesn't have a fan in my case is an intake.
Click to expand...

there also not filtered so you will have more dust in your case, the only way to have low dust is positive pressure will all intakes filtered, the any unused hole will be exhaust
 
P4Clock said:
there also not filtered so you will have more dust in your case, the only way to have low dust is positive pressure will all intakes filtered, the any unused hole will be exhaust
Click to expand...

I always had positive pressure before and was full of dust, now I want to try negative pressure to see how it goes.
 
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