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Fractal Define C fan configuration.

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Posted · Original PosterOP

Hi everyone. Thinking about where and how many fans I would use. At first I was planing on doing simple 2x140 front and 1x120 rear, even with front filter it suppose to be positive pressure, not much resistance behind fans, worst case - just slow down rear fan. But why stop at 3 when case got so many places, every MB on my list got at least 5 case headers and I dont really care about some noise.

Is there a downside of doing 4x140 front\top intake and 1x120 read exhaust, is there "too positive" pressure? Perhaps, if MB got 6 headers, even remove bottom shroud cover and add one more intake, its also filtered. It seems like more fresh and cool air = better, but perhaps I dont know something?


One other thing, I would most likely use NH-D15s, considering its size it very possible I wont be able to put top intake, or perhaps just one fan.


p.s. Just realized I posted in the wrong section, there is air cooling one, sorry :(

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1 minute ago, Warak said:

Is there a downside of doing 4x140 front\top intake and 1x120 read exhaust, is there "too positive" pressure?

Air would try to get forced out of cracks and vents like the rear PCI-E brackets, but it probably wouldn't be enough, so some of it would be pushed back through the fan blades, or would loop around edges of the fans and get recirculated. 

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I can tell you the Define R6 can fit 140MM fans with a DRP4 installed, but the Define C is a smaller case so it may not work.


I personally run 2 140MM intake, 2 120MM exhuast, and 1 140MM Exhaust, GPU and CPU temps are fairly decent, especially GPU, and it is quite quiet even at full load.

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I use 2 140mm intake and 2 120mm exhaust, seems to work pretty well. 

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