PWM Hub pump connection

[Watercooler970]

Hello everybody!

 

There are several PWM hub questions on the forum, but I didn´t find the exact answer so I started a new topic.

 

So, I bought a Phanteks Enthoo Luxe case, which has a PWM hub for  fans. The hub must be connected to a CPU_FAN port to work. But my water cooling pump (EK XRES 140 D5 res/pump combo) also needs a fan port connection. The cable coming from the pump is normally connected to the CPU_FAN port, but now the port is taken.

 

The question is: can I connect the pump to the PWM hub? Might be a stupid question, but this is my first time building a custom water cooling loop, so I want to be absolutely sure.

 

Thanks for your time!

[FrisoVDVeen]

you might want to change hell to hello

[Watercooler970]

you might want to change hell to hello

Lol definitely 

 

Thanks for noticing!

But still looking for the answer 

[Guest]

CPU_FAN header is nothing special. Most cooling products recommend you to connect their stuff to the CPU_FAN header so that the cooling solution can respond to the changes in CPU temperature.

 

Also, voltage regulated fans/pump = 3pin. PWM regulated fans/pump = 4 pin.

 

Now going to your question, a quick Google search revealed that the fan connector that is coming off your pump is a 3 pin header. So a 3 pin header will run at full speed when connected to your motherboard CPU_FAN header regardless of the CPU temperatures, since the CPU_FAN header is a PWM header with 4 pins (the extra pin is the modulating one, which the pump header lacks, and thus runs in full speed all the time). So there is no benefit in connecting the pump to the motherboard, and rather you should connect the fan hub to that CPU_FAN header to control your PWM fans. The pump can be connected to any other header, or can be left out altogether, since there is a molex connection feeding power to it.

 

Just a sidenote, some ASUS motherboards also support controlling of voltage regulated fans/pumps (i.e. 3 pin fans/pumps), so then connecting the pump to the motherboard would make sense as you can control the pump.

 

Hope this helps.

 

EDIT: Isn't this your pump? : https://shop.ekwb.com/ek-d5-vario-laing-d5-vario

[Watercooler970]

CPU_FAN header is nothing special. Most cooling products recommend you to connect their stuff to the CPU_FAN header so that the cooling solution can respond to the changes in CPU temperature.

Also, voltage regulated fans/pump = 3pin. PWM regulated fans/pump = 4 pin.

Now going to your question, a quick Google search revealed that the fan connector that is coming off your pump is a 3 pin header. So a 3 pin header will run at full speed when connected to your motherboard CPU_FAN header regardless of the CPU temperatures, since the CPU_FAN header is a PWM header with 4 pins (the extra pin is the modulating one, which the pump header lacks, and thus runs in full speed all the time). So there is no benefit in connecting the pump to the motherboard, and rather you should connect the fan hub to that CPU_FAN header to control your PWM fans. The pump can be connected to any other header, or can be left out altogether, since there is a molex connection feeding power to it.

Just a sidenote, some ASUS motherboards also support controlling of voltage regulated fans/pumps (i.e. 3 pin fans/pumps), so then connecting the pump to the motherboard would make sense as you can control the pump.

Hope this helps.

EDIT: Isn't this your pump? : https://shop.ekwb.com/ek-d5-vario-laing-d5-vario

Thanks man! Very good answer, mark solved.

And yes, that's the pump.