DS4 CPU Fan Control

gooner_47 · 26 Oct 2006 at 08:54

At the moment if I plug the CPU fan into the motherboard connection, the fan doesn't come on when I turn on the computer, is this normal? Will it come on automatically when it gets hotter?

MeatLoaf · 26 Oct 2006 at 09:10

Yes it normal, but theres an option in the bios to allow the fan to spin all the time.

gooner_47 · 26 Oct 2006 at 11:13

OK thanks, I think I'll set it to be on all the time, it makes me uneasy thinking it may not come on when needed!

Ozymandias · 26 Oct 2006 at 12:15

SpeedFan does a pretty good job controlling the fans on the DS4. The fans start at full blast and then are automatically adjusted down / up according to how you configure SpeedFan.

gooner_47 · 26 Oct 2006 at 12:46

Ok thanks, I'll investigate that once I've got Windows all set up.
One thing though, the motherboard connector has 4 pins - and it states in the manual that one of them is for speed control (something along those lines anyway) - but the fan connector only has 3 pins, it doesn't use this 4th one. So how is the speed controlled?

Ozymandias · 26 Oct 2006 at 12:55

The fan is controlled via pulse width modulation or voltage - you plug the 3 pin fan into the 4 pin socket and set the fans to be software controlled in SpeedFan.

gooner_47 · 26 Oct 2006 at 13:14

ok, and what should the bios settings be for the fan, auto? always on?

Ozymandias · 26 Oct 2006 at 13:18

Always on

gooner_47 · 26 Oct 2006 at 13:24

ok thanks

LoadsaMoney · 26 Oct 2006 at 14:14

Yeah it says in the Manual for the DS4 you have to go into the PC Health Status in the BIOS, and set the Fan Speed Control Mode to PWM, just set mine up yesterday with the Freezer 7 pro, and it did that till i changed the setting, id feel a bit uneasy as well with that.