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Questions about GIGABYTE products => Motherboards with Intel processors => Topic started by: Tularis on August 19, 2012, 05:43:52 pm

Title: GA-X58A-UD7 Fan Speed
Post by: Tularis on August 19, 2012, 05:43:52 pm

Hello,

I have a exhaust fan connected to "Sys_Fan2" and I don't think it is running at full speed.

How would I increase the speed?

(http://i868.photobucket.com/albums/ab248/petersgc/Sys_Fan2.png)

Title: Re: GA-X58A-UD7 Fan Speed
Post by: Dark Mantis on August 19, 2012, 05:53:12 pm

Hi .

I am, afraid that SYS_FAN2 on all Gigabyte motherboards is made to run at half speed by default. I can't say why this is done but every board I have come across is configured this way. The only way around it is to draw the fans power direct from the PSU or use another header.

Title: Re: GA-X58A-UD7 Fan Speed
Post by: Tularis on August 19, 2012, 06:13:41 pm

How Strange... So the fact that it has an extra pin doest mean that I can control it?

So if use "Sys_Fan3" above it, will that run at full speed?

I also have a Intake fan in "Sys_Fan1" that ok?

Title: Re: GA-X58A-UD7 Fan Speed
Post by: Dark Mantis on August 19, 2012, 06:17:52 pm

Correct and you can use the other header but don't overload it. There is a one amp maximum load on it.

Title: Re: GA-X58A-UD7 Fan Speed
Post by: Tularis on August 19, 2012, 06:33:15 pm

Cheers!

It's running faster now :)

Last question. If a Fan is connected directly to a Molex connector does that mean it will always run at speed?

Title: Re: GA-X58A-UD7 Fan Speed
Post by: Dark Mantis on August 19, 2012, 09:44:45 pm

If you connect it directly then yes it will run at the full speed of the fan whatever that happens to be. You can of course add an inline resistor to drop the voltage and slow the fan down or even use a potentiometer to vary the resistance giving you  variable speed. Basically a fan controller.