Official GIGABYTE Forum

Questions about GIGABYTE products => Motherboards with Intel processors => Topic started by: Beau on July 16, 2011, 11:00:34 pm

Title: system fans vs. power fan headers?
Post by: Beau on July 16, 2011, 11:00:34 pm

What's the difference? My board has:
3 pin (SYS_FAN1)
+
4 pin (SYS_FAN2)
+
 3 pin power fan header (PWR_FAN).

I'd also like to turn down the RPMs on my 120mm front case fan to reduce noise soemtimes. The Green utility thingy seemed to want to cut back on the CPU while reducing the fans and I didn't like that. Non-Gigabyte "SpeedFan" software didn't list my board.

Thanks.

Title: Re: system fans vs. power fan headers?
Post by: Dark Mantis on July 17, 2011, 10:49:34 am

Hi

The main difference between the 3 and 4 pin fan headers is that the 4 pin are  speed controllable and can be read out via the BIOS if the correct fan is fitted.

Sysfan2 is only half the speed of the other fans.

Title: Re: system fans vs. power fan headers?
Post by: Beau on July 17, 2011, 11:30:32 am

Thank you.