Importance of CHA_FAN...?

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794

794

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Sep 18, 2013
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In the manual of my motherboard it says that if you are using multiple graphics cards to make sure you plug one of your case fans into any of the connections labeled CHA_FAN. I was wondering how important this is.

Currently I have my radiator (H100i) into CPU_FAN and the 2 fans connected to it are plugged right into the waterblock itself. I have three case fans, but I have all three of them plugged into the fan voltage controller included in the case (Arc Midi R2). The connector lets me control whether the fans are spinning with 5V, 7V, or 12V.

How crucial is it that I plug 1, 2, or 3 of the chassis fans into their designated spots on the motherboard? Can they all stay connected to the voltage controller, or does it actually matter enough that I should put one or two into a CHA_FAN slot?
 
Solution
JackNaylorPE
Enthusiasts motherboards are coming with more and more fan headers as users want flexibility and control over their fans.... this way the BIOS controls fan speeds ramping them up when needed for cooling and ramping them down when not needed to limit noise production.

Newer cases are taking advantage of this by providing internal fan headers / repeaters which allow you to control 10-15 fans this way. Asus has a 1 click overclocking feature which OCs the CPU (and does an excellent job BTW) and then analyzes all ya fans and optimizes their operation. In other words.... the direction the industry is going in is to do away with manual intervention and have the BIOS control everything ....and it can do a better job than we can and at less...
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JackNaylorPE

JackNaylorPE

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Enthusiasts motherboards are coming with more and more fan headers as users want flexibility and control over their fans.... this way the BIOS controls fan speeds ramping them up when needed for cooling and ramping them down when not needed to limit noise production.

Newer cases are taking advantage of this by providing internal fan headers / repeaters which allow you to control 10-15 fans this way. Asus has a 1 click overclocking feature which OCs the CPU (and does an excellent job BTW) and then analyzes all ya fans and optimizes their operation. In other words.... the direction the industry is going in is to do away with manual intervention and have the BIOS control everything ....and it can do a better job than we can and at less cost.

Can't say for sure since I don't know the model, but I imagine the manual is telling you to connect the fan to the header so that when it senses heat, it can crank up the speed and get rid of it for you....then crank back down when the load disappears.
 
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794

794

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Sep 18, 2013
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10,510


It's an Asus Rampage IV Formula. Saves a bit of clutter in the front to have them plugged into the case but I do have custom sleeved fan extensions just in case.

 
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