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ok extra fans.. where to mod them?

post #1 of 4
Thread Starter 
ive got a 120mm fan for my exhaust, and an 80mm fan for the side of my case (next to the graphics card) and ive got an extra 120 and a couple of extra 80mm's...
im thinking about putting the 120mm near the hard drives, or the dvd-burner... which one should i do?
also, i was thinking about putting an exhaust fan (80mm) on the top of the case.. would this be beneficial or would it screw up my pressure balance? if so, where should i really put the extra 80mm (or two if you've got another suggestion)?
Heisenberg
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Heisenberg
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post #2 of 4
Greetings,

Placing a 120mm up front will improve your airflow considerably. 80mm fans do more air but not nearly as efficiently as 120's, in addition an average 120 at a lower RPM will be much quieter than an 80 that is moving less air at a higher RPM.

So, 120 at the rear: exhaust, 120 up front: intake, 80mm on the side: intake. Consider the nominal air-pressure in the case. Most people want a slightly positive pressure (more intake than exhaust). This means blancing the CFM between the 3 - takes some RPM tweaking with the 80 thrown in the mix.

If your HDD is running warm, than having cool air blowing over it will help. If not and you have the 5.25" bays to spare then a 120 there will move air nicely through the case:



Hope this helps.
Flux
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Flux
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post #3 of 4
Thread Starter 
so ill want slightly higher air pressure inside the case than outside the case then correct?
i think what ill do is put an 80mm in the 5.25" bays and a 120mm next to the hard drives. i've got a fan controller, but i have a feeling i wont really need it... these are some thermaltake thunderblades, 21db and 78cfm. lol we'll see how much noise it makes with some air resistance though...
Heisenberg
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Heisenberg
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post #4 of 4
Yes, though only slightly. A higher pressure helps "push" air out instead of ciculating within the case and will reduce the amount of dust that is allowed to settle. In addition I would recommend filters on all intakes.

If you have a controller you might want to consider using it to help w/ the noise. I use controllers for gaming: low RPMs for internet, word Processing, etc. and I crank 'em up for gaming and benchmarking.
Flux
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Flux
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