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PWM fan hub power

akshay
By akshay
in Cooling
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Posted

Is it fine connecting a 3 fans to a single PWM output on the motherboard with a splitter or do you need one which also provides additional power(through SATA or molex) 

been looking for one and both type,with and without power, are available,so...not sure if the one without power will work.

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I think PWM can supply 30 watts which is enough for quite a few fans. I have 3x140mm and a 120mm connected to one pwm on the mobo and they all work fine and can all go up to full speed with no issues. 

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  • Author

thanks...just wanted to know that before spending some monies on fans and a hub9_9

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A good rule of thumb is no more than 3-4 fan per header to ensure it doesn't overload the fan headers which usually have a 1Amp capacity. 

Updated Modding FAQ

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