Does PWM fan splitter affect fan speed?

[StormEye]

I am planning to add two radiator rans to CPU_Fan Header on motherboard.

 

Wondering if using a PWM splitter to do this would affect the fan speed (such as half speed).

[MegaLukey]

No this should not effect it

[Bjernhart]

I'm currently using a PWN splitter and I can confirm that it does not affect fan speed. You can manualy change the fan curve within the BIOS if you like.

[LogicalDrm]

No. Mobo will deliver full 12V to both fans and use PWM to control them.

[StormEye]

19 hours ago, MegaLukey said:

No this should not effect it

 

12 hours ago, Bjernhart said:

I'm currently using a PWN splitter and I can confirm that it does not affect fan speed. You can manualy change the fan curve within the BIOS if you like.

 

5 hours ago, LoGiCalDrm said:

No. Mobo will deliver full 12V to both fans and use PWM to control them.

Thanks for the replies.

 

Now I have another question, which is somewhat and somewhat not related to this.

 

How many PWM fans can be supported by a single header (using splitters) before it becomes too much for that12V?

[LogicalDrm]

3 hours ago, StormEye said:

 

 

How many PWM fans can be supported by a single header (using splitters) before it becomes too much for that12V?

Not about volts. It's about amps. Each header is 1A. Fans use 0.25-0.6A. You can safely have 3 per header, as long as combined amps of fans don't exceed that 1A.

[StormEye]

34 minutes ago, LoGiCalDrm said:

Not about volts. It's about amps. Each header is 1A. Fans use 0.25-0.6A. You can safely have 3 per header, as long as combined amps of fans don't exceed that 1A.

Got it. Thanks for the info.

[MegaLukey]

On 12/21/2017 at 12:19 AM, StormEye said:

Got it. Thanks for the info.

You can also get a fan hub, for I think 20~ dollars that plugs into a USB port on your motherboard, that will be able to handle as many fans as you could possibly put in your computer ( the pins for front IO and stuff, not the actual USB port for a USB)

[LogicalDrm]

15 hours ago, MegaLukey said:

You can also get a fan hub, for I think 20~ dollars that plugs into a USB port on your motherboard, that will be able to handle as many fans as you could possibly put in your computer ( the pins for front IO and stuff, not the actual USB port for a USB)

There are also hubs which use mobo headers for rpm. They both have SATA as power source which eliminates any issues of fan overdrawing power from mobo.