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Pwm compatible case fans?

Last response: in Components
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December 4, 2013 1:35:31 PM

Hey guys,

I'm a bit confused about running fans in pwm, case fans in particular. I'm looking at getting a Bitfenix Shinobi window case and asus Gryphon matx board.

Without trying to sound a bit stupid are all case fans compatible with running in pwm? I've read other threads where people have bought cheap fans which won't work in pwm.

I'm guessing the motherboard will be able to control the fans in different modes/ speeds.

I'm planning on using a H75 Cooler for the CPU which has pwm fans so no issue there.

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December 4, 2013 2:13:53 PM

PWM fans control their speeds automatically. You can control any fans that are connected to the motherboard through software.

A fan has to be PWM (4-pin connector, not 3-pin) and plugged into a PWM fan header (4-pin) for it to work as a PWM fan.
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December 4, 2013 2:44:21 PM

ihog said:
PWM fans control their speeds automatically. You can control any fans that are connected to the motherboard through software.

A fan has to be PWM (4-pin connector, not 3-pin) and plugged into a PWM fan header (4-pin) for it to work as a PWM fan.


Ah ok, thanks for that. So as long as the fan has a 4-pin connector it will be PWM? I'm guessing all case fans are 4-pin then?
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December 4, 2013 2:47:07 PM

No problem.

Yes, if the fan has a 4-pin connector, it is a PWM fan. But, not all case fans are 4-pin; case fans don't have to PWM.
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