Differences between motherboard headers, need help!

[Yazan22]

Hello everyone, to begin I am new here. I am very sorry if this isn't the place for such a question.
I will be building me first pc tomorrow and I have a corsair h75 as my cpu cooler.
As you know, it has 2 fans for a push-pull config.
My motherboard's headers are:
cpu_fan (4pin)
pwr_fan (3pin)
sys_fan(3pin)
sys_fan2(4pin)
I am really confused on where to plug the pump and the fans !
If anyone could help me help, its really appreciated.
I know it is a dumb question, but how do i set up a push-pull config.
I mean what it the direction of the airflow?

 

[Mr Kagouris]

The difference is basically speed control. cpu_fan is intended to control the fans for the CPU, pwr_fan is for the PSU fan (there is no PSU I know of that uses an external header for its fan anymore so don't worry about this), and sys_fan is for the case fans.

Now, for your setup, you could use a 4pin fan header splitter and connect both fans to the cpu_fan header via that. However this may result in your fans being capped at half speed, so I'd recommend getting an internal fan hub instead.

As for the fan configuration, to set up push-pull just have both fans facing the same direction, doesn't matter which. Usually people set them to send air out of the case. If you don't know which way to orient the fans, check the side of the fans, they'll have two little arrows in the plastic, one showing which way it spins and one showing which way it blows air.

 

[Mark_1970]

This video shows connections https://www.youtube.com/watch?v=wvaiECein68

 

[Yazan22]

The difference is basically speed control. CPU fan is intended to control the fans for the CPU, pwr_fan is for the PSU fan (there is no PSU I know of that uses an external header for its fan anymore so don't worry about this), and sys_fan is for the case fans.

Now, for your setup, you could use a 4pin fan header splitter and connecting both fans to the cpu_fan header via that. However this may result in your fans being capped at half speed, so I'd recommend getting an internal fan hub instead.

As for the fan configuration, to set up push-pull just have both fans facing the same direction, doesn't matter which. Usually people set them to send air out of the case. If you don't know which way to orient the fans, check the side of the fans, they'll have two little arrows in the plastic, one showing which way it spins and one showing which way it blows air.

my h75 already comes with an adapter to fit the 2 fans in one header, so you say i plug this adapter in the cpu_fan?
what about the pump?

 

[Yazan22]

This video shows connections https://www.youtube.com/watch?v=wvaiECein68

thanks

 

[Yazan22]

This video shows connections https://www.youtube.com/watch?v=wvaiECein68

thanks

 

[Mr Kagouris]

The difference is basically speed control. CPU fan is intended to control the fans for the CPU, pwr_fan is for the PSU fan (there is no PSU I know of that uses an external header for its fan anymore so don't worry about this), and sys_fan is for the case fans.

Now, for your setup, you could use a 4pin fan header splitter and connecting both fans to the cpu_fan header via that. However this may result in your fans being capped at half speed, so I'd recommend getting an internal fan hub instead.

As for the fan configuration, to set up push-pull just have both fans facing the same direction, doesn't matter which. Usually people set them to send air out of the case. If you don't know which way to orient the fans, check the side of the fans, they'll have two little arrows in the plastic, one showing which way it spins and one showing which way it blows air.

my h75 already comes with an adapter to fit the 2 fans in one header, so you say i plug this adapter in the cpu_fan?
what about the pump?

Pump speed doesn't make a tremendous difference so just plug it into the 3pin sys_fan if it's convenient to do so (if not the 4pin works too). Then you can just give it a static speed in BIOS and you're good.

And yes the easiest way is to plug the two fans into the adapter and then plug the adapter to cpu_fan.