2 vs 4 Case Fans

[yjei]

Will there be a difference (big enough to be worth it) between using

1x be quiet SilentWings 3 PWM 140mm front
1x be quiet SilentWings 3 PWM 120mm front
1x be quiet SilentWings 3 PWM 140mm rear
1x be quiet SilentWings 3 PWM 120mm top

or

1x be quiet SilentWings 3 PWM 140mm front
1x be quiet SilentWings 3 PWM 140mm rear

[Omega]

Get two in front and one in the rear. That would be a ideal setup.

[⛧EyMi Mayhem⛧]

pec a écrit :

Will there be a difference (big enough to be worth it) between using

1x be quiet SilentWings 3 PWM 140mm front
1x be quiet SilentWings 3 PWM 120mm front
1x be quiet SilentWings 3 PWM 140mm rear
1x be quiet SilentWings 3 PWM 120mm top

or

1x be quiet SilentWings 3 PWM 140mm front
1x be quiet SilentWings 3 PWM 140mm rear

Good choice, but depends on the rest, it's not only up to the fan's.
Setup, rest of your cooling solution, case and so on.

But 2 are the min. for 'some' airflow.

A more popular choice: 2x front, 1x rear, 1x top or 2x rear.

So imo, I would buy 4 silent wings.

pec a écrit :

1x be quiet SilentWings 3 PWM 140mm front
1x be quiet SilentWings 3 PWM 120mm front
1x be quiet SilentWings 3 PWM 140mm rear
1x be quiet SilentWings 3 PWM 120mm top

*but would work on the setup
1x 120 and 140mm front.. ehh..

Would go with something like:
2x 120mm Front
1x 140mm Rear
1x 140mm Top

[shanqs]

Yeah you always want more intake than exhaust as the pressure inside the case will always try to equalize to that outside of it. If the other way around, air will be drawn in through unfiltered gaps in the case leading to dust build-up inside. I agree with Omega, two in front and one in the rear, as long as cable management is clean that is all that is needed.

[Bad 💀 Motha]

If its a high end CPU + GPU; outfit the Case with however many Fans it has a place for.
With the exception of maybe the Bottom and Sides.

Corsair SP High-Performance PWM are quite good. Connect every fan to a Motherboard Fan Header if possible and control them via Windows Software.

[tacoshy]

or have a good Fan controller combined with it like the Corsair Commander Pro. You can controll the fanspeed via software then just the same.

[Supafly]

pec a écrit :

Will there be a difference (big enough to be worth it) between using

1x be quiet SilentWings 3 PWM 140mm front
1x be quiet SilentWings 3 PWM 120mm front
1x be quiet SilentWings 3 PWM 140mm rear
1x be quiet SilentWings 3 PWM 120mm top

Use this for best airflow. Some may argue positive/negative pressure is better. Either comes with its own pros and ♥♥♥♥ and yo can read up on that if you want. Personally I never bother contemplating and use any front/bottom/side for intake and top/rear for exhaust. Side/bottom only if overclocking, GPU in particular. Using the above setup you'd actually have the same air pulling in the front as you'll be pushing out the rear and top. Won't be either but will allow a nice flow of air through your case.

[Overseer]

It's not simply the number though. If the front fans can actually move more air in than the rear fans can move out you will have overpressure anyways, no matter the amout of fans used.
Airflow is a science for itself and differs per case and setup. It's best to test it yourself and adjust if needed. Top fans are always great to get the heat out but since a lot of CPU coolers blow to the back of the case you also want to have that covered.

[tacoshy]

top exhaust are not for normal airflwo but for radiator support. Like Overseer mentioned any decent air cooler will blow the heat to the rear.

[shanqs]

The difference between positive and negative pressure isn't about better/worse airflow but reducing the amount of dust in the case. Obviously it doesn't matter if the intakes aren't filtered but otherwise, it's better to have air blow out of case gaps than to be sucked in through them, since no case is airtight and achieving equal pressure is rare. It would help to know which case the op is using, but like tacoshy stated top fans are usually for rads unless the motherboard is rotated 90°.

Better cooling equates to moving more air through the case regardless of pressure.

[Kaihekoa]

In my experience, top-mounted fans in an air-cooled build can negatively impact temperatures because they pull cool air from the front intake that would normally go to the CPU cooler, assuming it's oriented in the same way as the intake fans. Instead the CPU ends up using a lot of warm air from the GPU, causing higher temps than if you left the top alone, and top-mounted fans end up exhausting cooler air directly from the intake. If the top fan is at the posterior of the CPU fans, then you would avoid this problem.

[tacoshy]

What I like to do is as most top mounted fans come at least in dual fan setup:

Having the forward top fan as intake pushing cold air to the CPU cooler intake and the rear top fan as exhaust.

[Carlsberg]

I have 1 rear mounted behind cpu, cpu takes air from the cool current it draws over it. 1 top to extract warm air as it rises and 1 front that draws cool air over ssd's and all is good. As long as fans work together and maintain flow thru case it should be cool. I avoided a fan in lower rear because i believe it robs gpu of airflow, i have two gpu's that draw air in from case side and exhaust from their own rear vents.

[igloosfolly]

I like to mount the top fans one down and one up so I can draw hot air back into the system. WTH LMAO. High pressure in from the front and exhuast every darn place you can find. Make yourself a nice filter for the intake fan or fans from a Scotch Brite pad it will cut down on the dust.

[tacoshy]

igloosfolly a écrit :

I like to mount the top fans one down and one up so I can draw hot air back into the system. WTH LMAO. High pressure in from the front and exhuast every darn place you can find. Make yourself a nice filter for the intake fan or fans from a Scotch Brite pad it will cut down on the dust.

Not how airflow works. Have you ever tested this yourself? Works perfectly fine and better then having 2 exhaust on top when a normal tower CPU cooler. And it's not like you suck all hot air back into the case. You just need a slight pressure to force the airflow from the front not to exist through the top but to get pushed into the heatsink also breaking the hot airflow from the GPU not to run directly into the CPU heatsinkalso but gets pushed beneath it with airflow to the back.

[igloosfolly]

Still laughing not sure what you are trying to say but that aint the way it is done. I never have to question what I know and i never sick air whatever that is. The only reason I come here is for the neverending Comedy. Carry on and have fun.