Chaining 3 Noctua fans to one mobo PWN connector

[SammLeach]

Hi,

 

I bought x3 Noctua NF-A8 PWM case fans. Each came with a splitter where I could chain 2 or 3 of them to the same mobo 4 pin case fan connector.

Is going this fine? Will all 3 fans be able to run at full speeds like this?

[3 4-pin PWM fans connected to 1 4-pin PWN mobo connector]

 

Thanks.

[paradigm249]

im not entirly sure how it would go. maybe it will be too much power and maybe break the pins, or it will work

[Elehat]

Napkin Maths, each fan has a max amps of 0.08A. Most mobo fan headers give 1A, so yes, you can create a massive web of splitters and put 12 of these fans on 1 header if you really want. you won't be able to control their speed individually though. You could also get a fan controller.  

[SammLeach]

im not entirly sure how it would go. maybe it will be too much power and maybe break the pins, or it will work

 

If you're not sure, why reply? You reply provides zero value.

 

 

Napkin Maths, each fan has a max amps of 0.08A. Most mobo fan headers give 1A, so yes, you can create a massive web of splitters and put 12 of these fans on 1 header if you really want. you won't be able to control their speed individually though. You could also get a fan controller.  

 

Ok. Makes sense. Thanks.

[paradigm249]

If you're not sure, why reply? You reply provides zero value.

 

 

 

Ok. Makes sense. Thanks.

trying to be helpful, turns out you dont need

[tbake0155]

Yes you can, as stated you just add the amperage of each fan to determine how many you can run off one PWM header. 

 

Not all fans are such low amperage as those noctuas, however, so though in this case you can put 4 of those fans on one header, that is not always the case!  Just to be clear.

[W-L]

If you're not sure, why reply? You reply provides zero value.

Ok. Makes sense. Thanks.

 

Just note it's a good rule of thumb to not have more than 3-4 fan per header since the starting current sometimes is many times higher than the rated running current. If you plan for PWM fans to have a whole lot of them using a separately power splitter is good since it takes power from the PSU but PWM signal still from the header. 

http://www.amazon.com/Swiftech-8W-PWM-SPL-ST-Way-PWM-Splitter-Sata/dp/B00IF6R4C8

[SammLeach]

Yes you can, as stated you just add the amperage of each fan to determine how many you can run off one PWM header. 

 

Not all fans are such low amperage as those noctuas, however, so though in this case you can put 4 of those fans on one header, that is not always the case!  Just to be clear.

 

 

Just note it's a good rule of thumb to not have more than 3-4 fan per header since the starting current sometimes is many times higher than the rated running current. If you plan for PWM fans to have a whole lot of them using a separately power splitter is good since it takes power from the PSU but PWM signal still from the header. 

http://www.amazon.com/Swiftech-8W-PWM-SPL-ST-Way-PWM-Splitter-Sata/dp/B00IF6R4C8

 

Ok. Thanks. Good to know.

 

Temps now never rise over 80C while before they would reach up to 84C.

 

Now I have the 3 80mm Noctuas on one connector and the CPU 90mm on another. I guess it would make sense to put 2 fans on one connector each.

 

Noctua goodness:

 

 

[WoodenMarker]

Ok. Thanks. Good to know.

Temps now never rise over 80C while before they would reach up to 84C.

Now I have the 3 80mm Noctuas on one connector and the CPU 90mm on another. I guess it would make sense to put 2 fans on one connector each.

Noctua goodness:

 

 

The regularity of the fans look nice.