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Manual CPU fan control


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9 replies to this topic

#1 Magnarider

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Posted 16 June 2015 - 08:51 AM

I need to find a way to set my CPU fan control to full speed without the use of hardware but be able to monitor it witht he motherboard. I have tried using my BIOS and software but it keeps resetting itself everytime I reboot. Is there some type of switch that I can install that will allow me to set the fan at high speed while still be able to monitor its rpms with software? So I cant use a molex adaptor because that would not allow the motherboard to monitor it.
 
Any ideas?


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#2 Magnarider

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Posted 16 June 2015 - 09:09 AM

I was thinking of using this but if its plugged into the motherboard header will it be software controlled or will it be controlled by the psu through the 4 pin molex adaptor? I dont want the computer BIOS or software to have fan control I only want to be able the monitor the fan through software and not control it with software??     http://www.newegg.com/Product/Product.aspx?Item=N82E16812311001



#3 Mike.Tech

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Posted 16 June 2015 - 10:33 AM

Are you pressing F10 to save the bios after changing?

 

The lead you link has only one speed wire. These cables are simple. The red and black go to PSU yellow and black respectively, while the tacho monitor wire stays in the original 3 pin connector.

If you are able, you can sort this out at no cost.



#4 Magnarider

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Posted 16 June 2015 - 10:36 AM

IM pressing save all changes and exit before I leave the BIOS. I have a MSI Z97A Gaming 7 MOBO and its command center always makes changes without my approval.  Will the link that I showed allow me to monitor the fan RPM while keeping the fans at full speed or will the software take over.



#5 Mike.Tech

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Posted 16 June 2015 - 11:50 AM

It states you can only monitor one fan with that item. The fans will always be full speed.



#6 Magnarider

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Posted 16 June 2015 - 11:53 AM

So am I to understand that I could use that wire to plug my cpu fan up directly and use it to monitor the speed but not change it? So if it were plugged in I could see the fan speed but not change it?



#7 Mike.Tech

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Posted 16 June 2015 - 11:59 AM

Yes. The item supports both 3, and 4 pin fan connectors on the MB.


Edited by Mike.Tech, 16 June 2015 - 12:00 PM.


#8 Magnarider

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Posted 16 June 2015 - 12:13 PM

My concern is whether or not the motherboard can control the fan spped. I dont want the motherboard to control the fan speed just monitor it.???????/?



#9 Mike.Tech

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Posted 16 June 2015 - 07:06 PM

Only the speed reporting wire will be connected to the board, usually with the negative also. The fan's power leads are fully active from the PSU itself.


Edited by Mike.Tech, 16 June 2015 - 07:07 PM.


#10 Magnarider

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Posted 16 June 2015 - 07:44 PM

That is exactly what I want I think that I will order this.

 

Thanks






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