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Radiator fan installation

post #1 of 7
Thread Starter 
Hi, is there any difference between fans installed directly on to a radiator versus a radiator installed on to the top of a case, then the fans installed on to the case above the radiator?

I have a NZXT switch and not planning on doing push/pull. I'm wondering if it would be best to install the fans in a push/exhaust to the rad ( Fans >> Rad >> Top of Case ; or if I should have the rad installed to the bottom of the case then the fans installed in the top space of the case above the rad in a pull/exhaust config ( Rad >> Case >> Fans ).
post #2 of 7
Hi, is there any difference between fans installed directly on to a radiator versus a radiator installed on to the top of a case, then the fans installed on to the case above the radiator?

Not really, the direction of air matters though.

If the radiator is going to be on top or anywhere else you want to draw fresh ambient air from the outside into the rad, instead of pulling hot computer air out the rad into your ambient. thumb.gif
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post #3 of 7
If you are planning on buying a 240mm rad, I would install it on the bottom of the case as an intake. This will take the coldest available air in your room and move it through the fins of the radiator. If you are buying a 360mm radiator for the top mounts, an intake would also pull relatively cool air from outside the case, but it might interfere with the flow of the air cooling other components (I usually have the fans moving air from front to back/bottom to top depending on what is appropriate).
 
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post #4 of 7
Thread Starter 
Right, my plan is a 240 on the bottom with fans on top as an intake and then a 360 on top with fans as an exhaust. I figured I'd install the fans on top of the case above the radiator but wasn't sure if this wouldn't cool as well as if I had the fans on the bottom of the rad.
I'll also have fans in the front for intake and if there is room a small fan on the back for an extra exhaust.
post #5 of 7
Quote:
Originally Posted by zeusthunder369 View Post

Right, my plan is a 240 on the bottom with fans on top as an intake and then a 360 on top with fans as an exhaust. I figured I'd install the fans on top of the case above the radiator but wasn't sure if this wouldn't cool as well as if I had the fans on the bottom of the rad.
I'll also have fans in the front for intake and if there is room a small fan on the back for an extra exhaust.

Uhh...

if you have a 360 on top , you want air to be sucking in from the outside into the radiator, never mind heat rises concept, won't help really, and you probably want the other radiator to be intake aswell, pushing air into the radiator, not pulling case air through the radiators, that would just ruin your temps.
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post #6 of 7
Thread Starter 
Quote:
Originally Posted by kyismaster View Post

Uhh...

if you have a 360 on top , you want air to be sucking in from the outside into the radiator, never mind heat rises concept, won't help really, and you probably want the other radiator to be intake aswell, pushing air into the radiator, not pulling case air through the radiators, that would just ruin your temps.

Don't you typically want intakes on the bottom and exhausts on the top? If everything is an intake and there is no exhaust I see two problems:
1) There is no dust filter for the top fans, so they are blowing dust into your system.
2) There will be 'dead spots' of the air just sitting in the case not being blown out of the system.
post #7 of 7
Quote:
Originally Posted by zeusthunder369 View Post

Don't you typically want intakes on the bottom and exhausts on the top? If everything is an intake and there is no exhaust I see two problems:
1) There is no dust filter for the top fans, so they are blowing dust into your system.
2) There will be 'dead spots' of the air just sitting in the case not being blown out of the system.

Lol thats what rear exhausts and front intakes are for.

and vanity or ghetto made dust filters are for.

Your setting up it for water, not air cooling.

Ideally yes you want it to push air bottom to top if it was an air cooled system, but you are trying to cool water down, which hot case air won't help pushing it through the radiator.

eea7e8da_70-nzxt-switch-810.jpeg

looks like you got plenty space for front and rear fans.
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