NZXT Kraken x61 Question on overkill build with SLI 780ti, i7 4770K

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negative_codezZ

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Hello.

So, I am going to be putting an NZXT Kraken x61 into my build and need to know how the fan situation goes with a push pull configuration. For the fans under the radiator, do they push air up or down, and for the ones above, push up or down? I am guessing this works the same way as the x60, right? Thanks for your help in advance.

Build: http://pcpartpicker.com/b/P8FTwP
 
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Hello man


Yes, it will. However, it will also blow air over critical components, like the VRMs.
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Hello man

Hello man

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You always want radiator fans to push air into the case. Meaning the top fans push down, the bottom ones pull down.
 
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negative_codezZ

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Won't that push hot air into the case though?
 
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Hello man

Hello man

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Yes, it will. However, it will also blow air over critical components, like the VRMs.
 
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negative_codezZ

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Alright, thanks.


 
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FunkyFeatures

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For great airflow, the top should be used as exhaust, as well as the back - and everything else as intake. If you will pull air into the case through the rad, you should use the front. If you are fine with exhaust causing a little bit higher cpu temps, you should mount it on the top.
 
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Hello man

Hello man

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If you look at the design of mod boards, the CPU fan is meant to blow air across critical things, like the transistors and VRMs. That is why in the world of water coolers, when radiators are on the top, we defy the laws of case airflow and blow in.
 
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FunkyFeatures

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I guess modboards is motherboards - Yeah you are right. The vrm and such are at the top, but how about when just using stock cooler? It is not quite giving the vrm some airflow, and therefore we should also without watercooling do top intake? If your case is layed out properly, the front/bottom/side intake fans will do the job of cooling the vrm, and should not depend on the cpu fan.

If we used the top as exhaust, the airflow would keep going instead of "clunking up" right over the cpu, and only have the exhaust fan. In my mind - i cant back it up by facts - if we have two intakes going against each other, the airflow would be dead around the area they meet, and it will have to passively rise the hot air. As i said though, i cant back it up by facts.

I would say - even with watercooling, you should follow the case airflow - in that way the top and back rad would be exhaust, and intake/bottom would be intake. This is unfortunately a topic where we have no real answer - intake/exhaust in top.
 
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Hello man

Hello man

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A lot of times I would then throw a very high CFM fan in the back (120-150 CFM). That way the "competing" fans both have their air brawn out the back of the case-and quickly.
 
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FunkyFeatures

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That high cfm with 140mm? Must be loud :) I like quiet pcs. I guess you could do that, but i think a lot of people will prefer a more quiet pc. But you do have a point about having a great exhaust may just be able to do it.
If having good back exhaust is good enough for drawing all the airflow the right way, i think it could be way to do it - depends on what OP wants.
I would still go for top = exhaust and if rad must be intake, i would do it in the front - but this is more personal preference. I still believe in better airflow when doing that.
 
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