nzxt s340 airflow for most positive pressure and less dust build up

[snarkycoder]

I just bought this case for a new build and I am super new to this...  
What do you guys think about this airflow configuration?
Having the fan from top(with a dust filter) as intake as well as the 2 front ones

Do you think that having the top fan as intake would conflict with the cpu 2 fan cooler which is pushing air to the rear exhaust?
The much positive pressure the better right? :unsure:

Thanks!

 

[itsmyjobtoknow]

Personally I think you would only need two intakes in the front and a single exhaust in the back.

 

But the current set up you have now , it will work...but then you have air from the top pushing the airflow downwards so....I am not sure how optimal that is

 

But dust will always somehow make it into your system no matter what so just keep that in mind

[spwath]

Remove top fan, keep dust filter they're, keep everything else

[WoodenMarker]

Seems fine.

[Hyp0xia]

Yeah, don't use a top fan in this case, but do add a filter. I recommend the SilverStone FF143 for the task. I'd also suggest a slow, quiet fan with lower static pressure for the exhaust and good static pressure fans for the intakes.

[snarkycoder]

Yeah, don't use a top fan in this case, but do add a filter. I recommend the SilverStone FF143 for the task. I'd also suggest a slow, quiet fan with lower static pressure for the exhaust and good static pressure fans for the intakes.

How would I get a slow fan for the exhaust?

Could you recommend me a good static pressure fan for intake that is not a noctua brand?

Thanks

[Hyp0xia]

be quiet! Silent Wings 2 fans would be a great choice. Other options include the Phanteks PH-F140SP, BitFenix Spectre Pro, Nanoxia Deep Silence series, Noiseblocker BlackSilent Pro series, the Swiftech Helix fans, or, if you don't mind the LEDs, the Corsair SP140s. You can use the motherboard to control the speed of the exhaust or you can use in-line resistors. Since you don't like Noctua, a good option would be one of the slower Gentle Typhoons, such as the AP-12.

[ThomasD]

Why force hot air downward into the chassis?  Use thermodynamics to your advantage.

 

So, rather than filter a top intake, make that an unfiltered exhaust and convert the rear fan into a filtered intake.

 

That way it feeds fresh air to the CPU cooler (aim that upwards), the front fans maintain positive pressure, and the top fan exhausts the heated air.

 

I have a Thermaltake V51 set up similar and it works very nicely, most of the time the chassis fans are running at 40%, and they only ramp up under very heavy loads.

[Hyp0xia]

So, rather than filter a top intake, make that an unfiltered exhaust and convert the rear fan into a filtered intake.

 

That way it feeds fresh air to the CPU cooler (aim that upwards), the front fans maintain positive pressure, and the top fan exhausts the heated air.

 

I have a Thermaltake V51 set up similar and it works very nicely, most of the time the chassis fans are running at 40%, and they only ramp up under very heavy loads.

Also not a bad idea

[WoodenMarker]

Why force hot air downward into the chassis?  Use thermodynamics to your advantage.

So, rather than filter a top intake, make that an unfiltered exhaust and convert the rear fan into a filtered intake.

That way it feeds fresh air to the CPU cooler (aim that upwards), the front fans maintain positive pressure, and the top fan exhausts the heated air.

I have a Thermaltake V51 set up similar and it works very nicely, most of the time the chassis fans are running at 40%, and they only ramp up under very heavy loads.

There shouldn't be any hot air above the case unless there's a heater there. 

[ThomasD]

There shouldn't be any hot air above the case unless there's a heater there. )

Sorry for being unclear, I was referring to hot air within the chassis (that not vented by the GPU, from the motherboard, the CPU cooler, etc) being driven downward, and then having to re-circulate in order to be exhausted.  All that heat naturally wants to rise, top venting takes advantage of that tendency.

[snarkycoder]

Why force hot air downward into the chassis?  Use thermodynamics to your advantage.

 

So, rather than filter a top intake, make that an unfiltered exhaust and convert the rear fan into a filtered intake.

 

That way it feeds fresh air to the CPU cooler (aim that upwards), the front fans maintain positive pressure, and the top fan exhausts the heated air.

 

I have a Thermaltake V51 set up similar and it works very nicely, most of the time the chassis fans are running at 40%, and they only ramp up under very heavy loads.

So... since we are moving hot air to the top exhaust.

Would it be better if I use Closed PCI Slot Covers instead of those vented covers that come with the case?

If it doesn't make a difference, at least there would be less dust ... ?

 

[misthosg]

I have the exact same fan setup and it works fine for me.

[WoodenMarker]

Sorry for being unclear, I was referring to hot air within the chassis (that not vented by the GPU, from the motherboard, the CPU cooler, etc) being driven downward, and then having to re-circulate in order to be exhausted.  All that heat naturally wants to rise, top venting takes advantage of that tendency.

Heat rising is negligible in a case when there's any active airflow.

[Zackfoo]

Balance air pressure will be good too with slightly higher intake. You have way too much intake where the hot air will keep circulating inside. I have the same case I had tried all sorts of combination. For me, I have single 120mm radiator at bottom front and a 140mm at top front. One 140mm exhaust on top as hot air rises. And it is already enough.