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confused about air flow

post #1 of 10
Thread Starter 
I understand many manuals like h80i or rear 120 rads with the aio coolers suggest using the rear of your case for the spot to mount the rad and use intake for cooling the radiator, well normally with my phantom I had a fan as exhaust, I understand truly there probably isn't much difference, but temp wise, cooling wise which is truly the better method exhaust rear or intake rear for 120 rads. Most manuals suggest intake and I don't get the concept when airflow wise you got intake front and 2 intake sides, 2 rear exhaust 200 mm fans, and rear 120 which is what i'm confused about all on my phantom case. I just want the best over all temps I can get. It is also an issue because its hotter than hell in my apartment right now.
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post #2 of 10
Thread Starter 
Anyone, just seems you dont want all that hot air pushjed back into the case, dont you want it pushed out ?
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post #3 of 10
i haven't read that before personally but I think you miss understood something, either the rad is outside the case and the fan is connected after it so you'll get push pull just like most people do on the top or the location is somewhere else and the suggestion is for the other location.
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post #4 of 10
To provide optimal performance for your radiators, having them as intake ensures that they are taking in fresh cold air. You can just as easily reverse the airflow of your case by having the rear and top intake and have front as exhaust. Just give them some fan filters and you'll be fine.

The other components (mobo, ram) don't require cooling and airflow to the extent of the CPU, and GPU can be cooled via side intakes.
post #5 of 10
Quote:
Originally Posted by Jedson3614 View Post

Anyone, just seems you dont want all that hot air pushjed back into the case, dont you want it pushed out ?
You need to think outside the box tongue.gif. Rules:
1. Positive pressure (more intake than exhaust so dust doesn't get sucked in from every gap in the case)
2. Low turbulence and a preferred path of air
Those are the only two rules.

Since you have 200mm exhaust fans or the 120mm in the back, you might need a 120mm to 200mm shroud adapter, or put it at another place in the case. I ran into the tubing being to short to place it anywhere else besides the back, your mileage may vary. So, lets say you have a shroud adapter and mount the rad +fans so the back of your case is now the intake. Now you would need to reverse a few of the fans so that they now exhaust air rather than intake, typically the front but you could also use the top of the case if you have vertical fans (heat rises +1). Basically you can do anything you want as long as you have a "path" your expecting all hot air to exhaust to, and you keep slightly more intake than exhaust. Here is mine as an example.

I have the front and back as intake and have 2x120mm fans in the top as exhaust (I cut and modded it myself) totaling 3 intake and 2 exhaust.
feel free to make a paint drawing of your case /fan locations and I can help you out a bit.
post #6 of 10
Thread Starter 
Now that i ahve push pull as intake on rear radiator temps are cooler on cpu but gpu temps are higher by alot, I cant win
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post #7 of 10
which phantom case do you have? i see you said you have 2x 200mm fans in the rear, as exhaust? is that right? i thought the 200mm fans were in the top?
if you leave every factory intake fan as intake fans and only use the exhaust 120 fan for your h80i intake, you'll be fine. youll have positive pressure and your gpu should run cool from the side intake fan(s) pulling in cool air to it.
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post #8 of 10
Thread Starter 
If i said that i appoligize I have the phantom and yes they are exhaust on top
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post #9 of 10
then what i said stands. use the rear 120 for your rad intake, keep all factory intake fans as intake and keep your other exhaust fans as exhaust. you shouldnt have any problems or worries.
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post #10 of 10
Quote:
Originally Posted by pc-illiterate View Post

then what i said stands. use the rear 120 for your rad intake, keep all factory intake fans as intake and keep your other exhaust fans as exhaust. you shouldnt have any problems or worries.

I concur. The side fans should be giving your gpu air to breath.
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