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Need for case fans after water cooling

post #1 of 6
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Just wondering what everyone thinks about this.

I have had my system watercooled for awhile now in a Cooler Master Cosmos case, but have been wondering if I really need the three left over case fans still in the system.

To put it into perspective, there are the two 120mm fans that sit right underneath the top cover of the case and there is one other 120mm fan at the bottom of the case that sits next to the hard drive cages and blows upwards into the case.

Anyone else with a similar type of setup remove any of these fans and have any major differences with internal case heat?

I don't think I need the one at the bottom of the case, but just wondering what everyone else thinks about leaving case fans in after watercooling and how much of a difference they make.
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post #2 of 6
i was able to remove all the case fans when i got it, however it does affect the cpu a bit and the rest of the components very much.

If i turn all the fans off on mine (all 5 of them) then it crashes under load. with a dual core processor i would definitely recommend the use of one or two fans, they dont have to run fast, just enough to supply a constant airflow over the hotter motherboard components (ram, graphics card, mosfet, North/South bridge ect).

I used to have 2 tri-speed fans at 800rpm before i overclocked, and it was cool and quiet enough for me. That quiet that i was considering getting a fanless PSU to preserve the scilence.
post #3 of 6
Unless you have every single thing on your motherboard that could ever possibly heat up under a block, its generally smart to have case circulation regardless of cooling method.

I am currently modding/building a new case for my rig and I'm liquid cooled and I am still planning on having 3 120mm fans in there. Not to mention the sheer fanage from my rad which will create a little bit of airflow in the case.
    
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post #4 of 6
Put some super silent fans on your ram and chipsets and youll be fine. And unless your hard drives are stacked one on top of the other, they done need cooling.
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post #5 of 6
Try it, and see what your temps are. If they are too high, put the fans back in!
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post #6 of 6
You will still need your fans too keep your stuff that isn't water cooled from over heating. HD , Mobo , bridges ETC . 3 fans may not be needed, maybe one front intake for HDs and rear for Mobo and both for circulation . Try lower RPM fans or Speed fan to slow down the RPM of the fans you have, check out the FAQ Speed fan guide under my Icon Name.
    
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