3 things drawing power from a single fan header on EVGA clc 280?

thtran6

Upstanding
Oct 2, 2018
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So here's my specs:
msi z370 A-pro mobo
i7-8700k
32gb ddr4 ram
gtx 1080

So I just updated my h60 to an EVGA clc 280 (stock fans replaced with 2 noctua nf a14 ippc3000 fans).
There are 3 cables that branch out from the clc 280.
1st: a mini usb cable that connects to a usb port on the mobo to control evga software
2nd: a cable to connect to the pump header on the mobo
3rd: a cable that splits (like a Y) into 2 fan headers, which will connect to the 2 noctua radiator fans.

I currently do NOT use the 3rd cable because I connect the 2 radiator fans directly to the mobo's two CPU_FAN headers. This will let me control their rpm in the BIOS, but not in the EVGA software.

Question: so if I connect the 2 radiator fans to the 3rd cable described above (to control them in the EVGA software), does that mean all of the voltage/power for the pump and the 2 radiator fans will be drawn from that one single pump header? that's a total of 3 things drawing power from a single header right?

Would this be dangerous for the header? And would it even supply enough voltage/power to spin all 3 of these at max rpm?

Thank you for your inputs.

 

rubix_1011

Contributing Writer
Moderator
It isn't dangerous, but you might be able to find the max draw load in schematics somewhere. Some MB vendors are better than others at providing these types of details.

I think you could also find a PWM splitter that allows power draw from MOLEX or SATA power while still honoring the header speed signal...I would have to dig around and see if this is even a thing.
 

thtran6

Upstanding
Oct 2, 2018
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No, I believe the noctua's are just drawing 12V max just like the stock fans.

Because the single pump header would be the only thing supplying power to the pump and the 2 fans. I was just worried that the header would suffer too much voltage when I crank all 3 things to their max rpm.
 

rubix_1011

Contributing Writer
Moderator
It isn't dangerous, but you might be able to find the max draw load in schematics somewhere. Some MB vendors are better than others at providing these types of details.

I think you could also find a PWM splitter that allows power draw from MOLEX or SATA power while still honoring the header speed signal...I would have to dig around and see if this is even a thing.
 

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