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System fans locked at 2000RPM. Solutions?

post #1 of 17
Thread Starter 
I could really use some help reducing the speed of the fans in my new machine. The fans are both running at their maximum of 2000RPM and are way too loud for my taste. The CPU temp is around 27C (i5 2400) idle so I have some room to work with.

The fans are connected to the "System Fan" 3 pin header (using a 3 pin splitter) on the Gigabyte GA-H67N-USB3-B3. The BIOS doesn't allow me to control the voltage/RPM of the system fans otherwise I would just manually adjust them there. It only allows you to adjust the power for the CPU fan where my H50 is plugged in and left at full power. I can't seem to find a software solution that will allow me to control the speed of the fans independently from the CPU fan (I've been using SpeedFan without success).

At this point it seems like one of these is my best option. Any other suggestions? Has anyone had success with using SpeedFan to adjust system fans instead of CPU fans?
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post #2 of 17
Why not just buy a fan controller?

E.g) http://www.newegg.com/Product/Produc...-065-_-Product

that can control as many fans as you want (as long as there is no more than 12w being sucked through each channel)
Edited by patawic - 5/28/11 at 2:56pm
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post #3 of 17
Thread Starter 
I considered that but I only need to control a single set of fans. I it's a mini ITX case so it only has one 140mm and one 120mm. The 140mm is nice and quiet at full power so I'm not worried about the speed, I just need to reduce the power going to the fans from the single system fan header.
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post #4 of 17
Which fans are you using that are so loud
post #5 of 17
Quote:
Originally Posted by SteveTheJedi View Post
I could really use some help reducing the speed of the fans in my new machine. The fans are both running at their maximum of 2000RPM and are way too loud for my taste. The CPU temp is around 27C (i5 2400) idle so I have some room to work with.

The fans are connected to the "System Fan" 3 pin header (using a 3 pin splitter) on the Gigabyte GA-H67N-USB3-B3. The BIOS doesn't allow me to control the voltage/RPM of the system fans otherwise I would just manually adjust them there. It only allows you to adjust the power for the CPU fan where my H50 is plugged in and left at full power. I can't seem to find a software solution that will allow me to control the speed of the fans independently from the CPU fan (I've been using SpeedFan without success).

At this point it seems like one of these is my best option. Any other suggestions? Has anyone had success with using SpeedFan to adjust system fans instead of CPU fans?
Since you are leaving your cpu fans at full power, plug them into something else (other fan headers or Molex from the psu) and plug the fan you want to change into the CPU_FAN header.

Then go into BIOS, select PC Health and set Smartfan to enabled/Auto and Smartfan mode to Voltage (not Auto). Then use ET6 to adjust your fan.
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post #6 of 17
Thread Starter 
Quote:
Originally Posted by simplec6 View Post
Which fans are you using that are so loud
They're a pair of scythe 120mmx12mm fans in push pull on the H50 radiator so it gets pretty loud at full speed.
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post #7 of 17
Thread Starter 
Quote:
Originally Posted by ehume View Post
Since you are leaving your cpu fans at full power, plug them into something else (other fan headers or Molex from the psu) and plug the fan you want to change into the CPU_FAN header.

Then go into BIOS, select PC Health and set Smartfan to enabled/Auto and Smartfan mode to Voltage (not Auto). Then use ET6 to adjust your fan.
^^ Smart
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post #8 of 17
I noticed my gigabyte mobo didn't let me change the fan settings in the BIOS also... exept for CPu fan. you have to use the gigabyte tool in windows.
    
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post #9 of 17
Thread Starter 
Quote:
Originally Posted by iCrap View Post
I noticed my gigabyte mobo didn't let me change the fan settings in the BIOS also... exept for CPu fan. you have to use the gigabyte tool in windows.
Oh I haven't looked into their utility yet, I'll take a look at that, thanks!
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post #10 of 17
Thread Starter 
Quote:
Originally Posted by iCrap View Post
I noticed my gigabyte mobo didn't let me change the fan settings in the BIOS also... exept for CPu fan. you have to use the gigabyte tool in windows.
Which Utility are you using exactly? I'm going through the list on their site and not finding anything relevant.
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