Making fan come on when CPU goes above 55 degrees?

**jellymonster** · 06-12-2009, 04:50 PM

Hi,
I just purchased a Server case fan thinking that I wouldn't hear it as it would be in my boot. I was very wrong. It is very load.
So is there a way to keep it turned of or at low speeds until it reaches a certain temperature, then it runs at high speed until temperature is down again.

Thanks
JM

**PaulF** · 06-12-2009, 05:11 PM

Just hook it into one of the fan connector pins on your motherboard. They do temperature and speed control.

**jellymonster** · 06-12-2009, 05:12 PM

I've done that, it is still running at about 4000rpm.

**Tidder** · 06-12-2009, 05:15 PM

It could be that your mobo doesn't do automatic temperature/fan control. Try this out.

http://www.almico.com/speedfan.php

EDIT: A link to the fan you bought wouldn't hurt either.

**jellymonster** · 06-12-2009, 05:17 PM

haha, good ol' speedfan. I actually do have this, I just use it to monitor stuff XD. Never really understood how to control fans with it though, but I well def give it tommorow before I drive to work :P
Thanks

**Tidder** · 06-12-2009, 05:18 PM

lol, didn't the name clue you in as to what it might do? Ahh computer people... so silly.

**jellymonster** · 06-12-2009, 05:22 PM

haha, I'm not quite that stupid, I do know what it's main purpose is. It is also a good accurate, lightweight way to monitor sensors.

**Tidder** · 06-12-2009, 05:23 PM

Yeah, that's pretty much all I use it for these days as well. What kind of fan did you buy and what motherboard do you have?

**jellymonster** · 06-12-2009, 05:25 PM

GA-8S661FXM-775 motherboad
:http://www.gigabyte.com.tw/Products/...ProductID=1842

120mm Delta Server Case Fan Focussed Flow FFB1212EHE 4000rpm Ball Bearing
:http://www.scan.co.uk/Products/120mm...m-Ball-Bearing

very noisey XD

**Tidder** · 06-12-2009, 05:31 PM

According to the specs on that link, that fan does not have the 3rd wire required to sense the RPM. Does it have 2 wires or 3?

EDIT: And it looks like there are multiple versions of this fan. Does yours have one connector or 2? Looks like regardless of which version you have, they should have 3 wires total, red, black, and blue (pictures show blue, weird). Yes?