Help Slowing Down Case Fans

MK4512 · Nov 7, 2009, 09:46 PM

So I got a 2 cooler master LED fans for my case, and installed them. Unfortunately they run quite loud, is there anyway I can lower their speed?

Also, they are connected directly to the power supply, not the mobo.

Motherboard AOD790GX

Thanks

Meow9000 · Nov 7, 2009, 09:51 PM

You can buy some pre-made resistor to drop it from 12v to 5v that plug in between the psu and fan but i dont see them often over here in the uk. You could always drop round your local hardware/electronics strore and make some yourself if you have the tools and knowledge.

theonedub · Nov 7, 2009, 09:52 PM

Do the old fashion mod by swapping the wires in the molex plug. Here is a thread with pictures. I prefer the 5v, as there is no issues like the 7v mod may have. The fans slow down a lot though= low cfm.

thread here http://www.ocforums.com/showthread.php?t=372297

kenkickr · Nov 7, 2009, 09:54 PM

Quote:

Originally Posted by theonedub

Do the old fashion mod by swapping the wires in the molex plug. Here is a thread with pictures. I prefer the 5v, as there is no issues like the 7v mod may have. The fans slow down a lot though= low cfm.

thread here http://www.ocforums.com/showthread.php?t=372297

+1. That is the cheapest way but just as effective. Also doesn't require much work.

TheLaughingMan · Nov 7, 2009, 09:58 PM

If they are connected directly to the PSU, no. The third wire on the fan plugs for the mobo is the fan voltrage control line. If your fan has power from the PSU and a separate line (just that yellow third wire) you can connect it to the mobo and use a software fan control.

And my late post stands corrected.

choppy · Nov 7, 2009, 10:12 PM

google '7v fan mod' - straightforward mod, even I managed to do it lol

MK4512 · Nov 8, 2009, 03:59 PM

Thanks alot guys, performed the mod worked fine.

Nov 7, 2009, 09:46 PM	#1
MK4512 Join Date: Aug 2009 Location: Toronto, Canada Posts: 217 (0.16/day) Thanks: 48 Thanked 43 Times in 25 Posts System Specs	Help Slowing Down Case Fans So I got a 2 cooler master LED fans for my case, and installed them. Unfortunately they run quite loud, is there anyway I can lower their speed? Also, they are connected directly to the power supply, not the mobo. Motherboard AOD790GX Thanks __________________ CPU-Z validation sig pics temporarily blocked

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Nov 7, 2009, 09:52 PM	#3
theonedub habe fidem Join Date: Apr 2009 Location: Northern CA Posts: 6,601 (4.46/day) Thanks: 2,268 Thanked 3,187 Times in 1,922 Posts System Specs	Do the old fashion mod by swapping the wires in the molex plug. Here is a thread with pictures. I prefer the 5v, as there is no issues like the 7v mod may have. The fans slow down a lot though= low cfm. thread here http://www.ocforums.com/showthread.php?t=372297 __________________ My Heatware Feedback 129+ Pristine

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Nov 7, 2009, 09:51 PM	#2
Meow9000 Join Date: Jul 2009 Location: Wales, Uk Posts: 278 (0.20/day) Thanks: 14 Thanked 81 Times in 63 Posts System Specs	You can buy some pre-made resistor to drop it from 12v to 5v that plug in between the psu and fan but i dont see them often over here in the uk. You could always drop round your local hardware/electronics strore and make some yourself if you have the tools and knowledge.

System Name:	Wrigley II/ HTPC
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Nov 7, 2009, 09:58 PM	#5
TheLaughingMan Join Date: May 2009 Location: Douglasville, GA USA Posts: 3,696 (2.51/day) Thanks: 1,365 Thanked 1,262 Times in 929 Posts System Specs	If they are connected directly to the PSU, no. The third wire on the fan plugs for the mobo is the fan voltrage control line. If your fan has power from the PSU and a separate line (just that yellow third wire) you can connect it to the mobo and use a software fan control. And my late post stands corrected.

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Nov 7, 2009, 10:12 PM	#6
choppy Join Date: Jul 2007 Location: UK Posts: 1,114 (0.52/day) Thanks: 77 Thanked 154 Times in 142 Posts System Specs	google '7v fan mod' - straightforward mod, even I managed to do it lol

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Case:	Antec 300
Sound Card:	Soundblaster Live! 24-bit w/ Creative Inspire T6060 5.1 200W
PSU:	CoolerMaster Silent Pro Gold 600w
Software:	Windows 7 Professional Edition SP1 64-bit

Nov 8, 2009, 03:59 PM	#7
MK4512 Join Date: Aug 2009 Location: Toronto, Canada Posts: 217 (0.16/day) Thanks: 48 Thanked 43 Times in 25 Posts System Specs	Thanks alot guys, performed the mod worked fine. __________________ CPU-Z validation sig pics temporarily blocked

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