how does a mobo control speed via 4 pin connectors?

Control: management of fans, temp/rpm monitoring via soft/hardware

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gbyss00
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Joined: Mon Apr 06, 2009 10:21 pm
Location: USA

how does a mobo control speed via 4 pin connectors?

Post by gbyss00 » Mon Apr 06, 2009 11:36 pm

How does newer mobos with 4 pin connectors vary fan speed?

will this wiring be enuf for a mobo to control the fan speed?


img19.imageshack.us/img19/4523/dsc01791resize.jpg

psiu
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Location: Plymouth, MI
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Re: how does a mobo control speed via 4 pin connectors?

Post by psiu » Tue Apr 07, 2009 5:23 am

gbyss00 wrote:How does newer mobos with 4 pin connectors vary fan speed?

will this wiring be enuf for a mobo to control the fan speed?


img19.imageshack.us/img19/4523/dsc01791resize.jpg
No, the 4 pin via motherboard fans are PWM fans, they use 12V bursts to control the speed rather than adjusting the voltage. There is a specific pwm control wire for them.

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