CPU/Fan Controller question

YtseFlyer

Member
Mar 9, 2004
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I need the board's opinions on a setup issue.

I'm using this fan controller for my P-160 case and while it does have a lead to control the CPU fan, would it work properly (does the MB need to recognize a fan plugged into the provided fan power?) or should I use the power (pin) from the MB? I ran across a disclaimer on a site that mentioned when connecting a higher voltage fan to some MB?s, it could possibly fry the board?..can anyone confirm or deny this? I apologize that I don?t have the link to that available.

My setup is (will be*):
Antec P-160 (2x 3pin Antec 120 case fans)
Seasonic 460 SS PSU
*MSI Neo4 non-SLI (as soon as possible =)
Thermalright XP-90 w/ Panaflo H1B Link
2 x WD 200MB SATA Raid 0+1
NEC DVD Burner
Sony CD Burner
*Leadtek 6600GT
*3500+ Winchester
*1 GB OCZ or Crucial 3200 RAM

My logic is that with the higher fan speed on the H1B, I can dial in more air when needed with the controller. (Please excuse my inexperience with this?I?ve built pretty vanilla systems up to this point)

Best,

-rg


 

TRUMPHENT

Golden Member
Jan 20, 2001
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I don't know how you can get around hooking up the rpm sensor directly to the cpu fan header on the motherboard. I doubt if your computer will even start to boot without that input.

I just bought a Gigabyte Rocket 3D pro. I came with the basic fan controller and the wiring set up so the mainboard can monitor the cpu fan rpm's. Fan power comes from the main power supply and a rheostat in a 3.5inch drive bay controlls the voltage.

Make sure you get a fan with an rpm lead and connect it to cpu fan header on the mainboard.
 

YtseFlyer

Member
Mar 9, 2004
43
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That's what I was thinking--that the MB wouldn't see a fan plugged into that and not start...at least the fan is a 3 pin so I can control the speed....hopefully.

Thanks for the response!
 

Spike

Diamond Member
Aug 27, 2001
6,770
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Originally posted by: YtseFlyer
That's what I was thinking--that the MB wouldn't see a fan plugged into that and not start...at least the fan is a 3 pin so I can control the speed....hopefully.

Thanks for the response!

Hmmm, It has been a few years since I have plugged ANYTHING fan related into my motherboards. I always either hook them directly to my psu or to my controllers, all my fan and rpm leads on my mobo are unused. The only issue I had was my mobo monitoring utility yelling at me for having 0 RPMs on my cpu fan, but I just turned off the alarm and all is good now. This is with an old ECE K7S5A, Abit NF7-S 2.0, and FIC something or other (Don't know the model).

-spike
 

YtseFlyer

Member
Mar 9, 2004
43
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Originally posted by: Spike
Originally posted by: YtseFlyer
That's what I was thinking--that the MB wouldn't see a fan plugged into that and not start...at least the fan is a 3 pin so I can control the speed....hopefully.

Thanks for the response!

Hmmm, It has been a few years since I have plugged ANYTHING fan related into my motherboards. I always either hook them directly to my psu or to my controllers, all my fan and rpm leads on my mobo are unused. The only issue I had was my mobo monitoring utility yelling at me for having 0 RPMs on my cpu fan, but I just turned off the alarm and all is good now. This is with an old ECE K7S5A, Abit NF7-S 2.0, and FIC something or other (Don't know the model).

-spike


Very good information-I'll try it with my old system first. Thanks much!
 

Operandi

Diamond Member
Oct 9, 1999
5,508
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Your motherboard can control the speed of the CPU fan automatically based on CPU temp with software or through the BIOS. It's much more practical and efficient then hardware based fan controllers. Just set target temp and the fan will throttle down whenever possible.
 

Mucker

Platinum Member
Apr 28, 2001
2,833
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You could trick the mb bios by plugging a spare low noise 3 pin fan into the mb cpu fan header (maybe cool your ram?) and then plugging your CPU fan into your controller. I know if my Asus board CPU fan is below 2000rpm on start, I will get a beep and CPU error at startup, however, it does not stop the boot. I have a simple fanmate 2 controller that does a good job for me on my Zalman CPU fan.

m :)