Controlling case fans by desired temparature

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Ondra99

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Dec 29, 2013
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Hi,

i have a case with:
3x200mm AeroCool Silent Master (Front intake, side intake and top exhaust) (it has 3pin/Molex option on it)
1x120mm rear exhaust 3pin

How can i control fans by setting "I want 40 degrees celsius" (in PC or in some additional card) and it would automatically speed up the fans if needed to achieve this temperature or speed down (or maybe turn them off completely but some minimum selected RPM would be acceptable also).

Im looking for a cheapest way, not fancy touch LCD if there is some option. All i find is manual, i need automatic because my computer goes through night in various operations.

thx
 
Solution
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The motherboard can use the readings of embedded temperature sensors to control the fan speed. It is usually possible to adjust the settings for each fan header. I do not have much experience with the Gigabyte software, however, but, for example, on an Asus MB, you can select an individual fan, and associate a sensor (or combination of multiple sensors). You can then, for example, tell it to speed up the fan to 80% if the sensor record a temperature higher than 50 C.

As I said, I'm not too familiar with the Gigabyte MBs, but look at the options that you have in your BIOS, or the Gigabyte Easytune software. I do not think you will be able to completely turn off the fans, however, as most dedicated controllers can not do that. Here is an...
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Ondra99

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Dec 29, 2013
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Motherboard GIGABYTE G1.Sniper Z87
CPU 3-pin
SYS FAN1 (above graphic card slot) - for exhaust back 120mm
SYS FAN2 (bottom of MB) - for front 200mm
SYS FAN3 (bottom of MB) - for side 200mm
1 missing for top 200mm fan

The problem is how will MB know which one to increase ? It would just increase all of them?
I want to have an option for example under 30degrees to completely turn off side fan.
 
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dav_jw

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Jan 18, 2010
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The motherboard can use the readings of embedded temperature sensors to control the fan speed. It is usually possible to adjust the settings for each fan header. I do not have much experience with the Gigabyte software, however, but, for example, on an Asus MB, you can select an individual fan, and associate a sensor (or combination of multiple sensors). You can then, for example, tell it to speed up the fan to 80% if the sensor record a temperature higher than 50 C.

As I said, I'm not too familiar with the Gigabyte MBs, but look at the options that you have in your BIOS, or the Gigabyte Easytune software. I do not think you will be able to completely turn off the fans, however, as most dedicated controllers can not do that. Here is an overview of the software: http://www.hardocp.com/article/2013/07/01/gigabyte_z87xud5h_lga_1150_motherboard_review/2 (from a review of a different motherboard, so check on Gigabyte website for the up to date version of the software that will work with your MB)

If you need more control than the software can provide, you will need to look into dedicated fan controllers. The cheapest will only provide manual control, but some more expensive models will have individual temperature sensors for each fan, which you can place anywhere you want. You can then create different profiles to control the fan speed, depending on the readings from each sensors.
Here is an example of what I have in mind: http://www.newegg.com/Product/Product.aspx?Item=N82E16811997078
 
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Ondra99

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Dec 29, 2013
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I will probably start with letting case to control the front and top 200m fans by Fast/Slow button which i need running all the time anyway and plugging the side and rear vent into MB which i will try to control to even turn them off. Thanks.
I will also be getting TT Chaser MKI instead but they have the same setup, but use Colorshift fans whcih means they would work with these panels, this way i can use my 1x200mm AeroCool Silent Master as side intake without color and rear also doesnt have color LEDs. I need to study more of the LED setup when the case comes so i can decide how to make it work with such fan controller and still plug it into the color operator.
 
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Ondra99

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Dec 29, 2013
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What i found next is some PCIe card that can regulate Fans by Software, this would be great but there seems to be problems with compatibility and many issues. This would be the best way to control fans.
 
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