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Corsair H100i manual suggests intake but shouldn't top supposed to be exhaust?

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July 25, 2013 1:21:11 PM

Ok so I've an 140mm intake in the front and 2 x 120mm intake in the bottom, A 120mm exhaust in the rear which leaves the top for the H100i. In general, the top is better for exhaust (right?) but Corsair's manual says the H100i would perform well if it's a intake.

Would I lose anything if I ignore Corsair's advice?

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a c 275 à CPUs
July 25, 2013 1:24:46 PM

It would offer slightly less cooling, it simply would use hotter air to cool the radiator so the liquid inside would be warmer. It would still work but not as efficient.
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July 25, 2013 1:30:35 PM

Gam3r01 said:
It would offer slightly less cooling, it simply would use hotter air to cool the radiator so the liquid inside would be warmer. It would still work but not as efficient.


Would it be better if I make H100i intake, the rear intake and make the front exhaust and move the bottom intake's to the side as exhaust?

I'm just trying to balance the airflow for a negative pressure (more exhaust).
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a b à CPUs
July 25, 2013 1:37:37 PM

i to had the same question. but i ended up have the rad at the top off the case and an exhaust. (i have to front fans as intake and rear fan as exhaust). i did this because i don't want to pull dust into my case and my front fans are dust filtered.

i see many people using the rear fan as an intake and i'm not sure how much off a difference that makes. i have a dust filter on order so i can test have the rear fan as intake myself later on.
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July 25, 2013 1:47:31 PM

Top should indeed be exhaust. Why would you consider putting a radiator or heatsink at top though? That is the place which would funnel all heat out of your system.

A good place for double fan heatsink would be either at bottom of case or front. You can also attempt to install it on a side, however this would make rubber pipes move to produce leakage in future.

The reason behind putting exhaust fans at top is due to warm air floating to top naturally, hence path of warm air is known and can be further controlled via fans to speed up warm air exit.
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a b à CPUs
July 25, 2013 1:55:04 PM

in my case thanks to all the fans i have the temp in my corsair 350D is only 5-8'C higher than room temp even with my gtx 770 under full load.

but if i was doing big overclocks then i would have mounted the rad at the front of my case and used 4 fans for push pull :) 
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July 25, 2013 2:33:50 PM

yhikum said:
Top should indeed be exhaust. Why would you consider putting a radiator or heatsink at top though? That is the place which would funnel all heat out of your system.

A good place for double fan heatsink would be either at bottom of case or front. You can also attempt to install it on a side, however this would make rubber pipes move to produce leakage in future.

The reason behind putting exhaust fans at top is due to warm air floating to top naturally, hence path of warm air is known and can be further controlled via fans to speed up warm air exit.



Isn't H100i optimal when it's top-mounted?
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July 25, 2013 2:53:10 PM

Why would it be optimal when top-mounted?
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a c 275 à CPUs
July 25, 2013 3:47:13 PM

I think having it as an exhaust should be fine, its slight, but not something that will hinder you.
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July 25, 2013 3:53:36 PM

yhikum said:
Why would it be optimal when top-mounted?


I'm assuming the pump is not powerful enough and maybe that's why Corsair's manual also says that it's optimal when the tube is down.
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