Need help with a noisy new liquid cooler!

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Folkrod

Folkrod

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Jun 24, 2012
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10,510
Yesterday I overhauled my system and installed the Glacer 240L AIO Cooler in my rig. I'm getting great temps but I have a few questions regarding the fans. I plugged the two fans attached to the radiator into two open CHA_FAN headers. As a result the fans run pretty fast and are noisier than my old Air Cooler. The other thing I notice is that when the CPU performs almost any task (like opening my browser) the fans quickly rev up up to what appears to be max speed and then back down.

Do I need to plug the fans into the CPU_FAN header instead to fix this? I have one CPU_FAN Header and one CPU_OPT Header but the CPU_FAN Header is currently occupied by the cooling block's dummy connector. Can a radiator fan take its place and then I can just plug the other into the CPU_OPT header?

Any input would be greatly appreciated as I don't feel comfortable using my computer yet with the fans running so fast and loud
 
Solution
ekagori
Connect your fans to 4pin SYS-FAN headers for pwn control or use a splitter and connect them to the CPU_OPT header, enter bios and adjust the fan curve according to your cpu load. Chassis fan headers are typically 3pin and do not feature pwn, which means they run at full 12v all the time, hence the reason your fans are at max all the time.
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ekagori

ekagori

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Feb 9, 2013
407
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10,960
Connect your fans to 4pin SYS-FAN headers for pwn control or use a splitter and connect them to the CPU_OPT header, enter bios and adjust the fan curve according to your cpu load. Chassis fan headers are typically 3pin and do not feature pwn, which means they run at full 12v all the time, hence the reason your fans are at max all the time.
 
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Solution
Folkrod

Folkrod

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Jun 24, 2012
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10,510


Awesome! Thanks for the response! Only one thing. I checked my motherboard and I'm not sure where the SYS-FAN headers are. Here is a picture listing all the connectors on my board.
 
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ekagori

ekagori

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Feb 9, 2013
407
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You have the sabertooth z77 right? That board actually has 4pin chassis headers so it should only be a matter of entering the bios and setting your fan speed. I think asus also has a windows utility that allows you to change fan speeds, if you have it installed do it from there. You can plug your fans to the cpu_opt and cha_fan header next you your main cpu_fan header
 
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Folkrod

Folkrod

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Jun 24, 2012
14
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10,510


Perfect! Yes. I do have the Sabertooth. I recall seeing some fan speed settings in the BIOS but I was not entirely sure what settings to change. I've looked online for some help but have been having difficulty.
 
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