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Corsair h55 REALLY loud?

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  • Computers
  • Systems
  • Corsair
Last response: in Systems
January 27, 2014 11:14:21 AM

I have a corasir h55 in my computer and it is very very loud. When my pc is idle the stock cooler is quieter, but under load the h55 is quieter. In Speedfan it always shows the h55 running at 99%
How can i make it quieter?

More about : corsair h55 loud

January 27, 2014 11:30:32 AM

How did you plug in the parts.

The pump should be plugged into a header that is NOT controlling the fan speed or even the power supply if you have the adapter to do so.

Now the fan may not be pwm(unless they made changes, it has 3 pins). Please check the bios to see if you have fan control options for Voltage control instead of PWM. If not, you may be able to use other fan headers in the system if they work with voltage control.

If all else fails, getting a 120mm fan with PWM will bring back control for sure.
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January 27, 2014 11:37:06 AM

I plugged the pump into the cpu fan header and the fan into the system fan header
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January 27, 2014 11:39:28 AM

k, does the bios allow you to set voltage control for the fan. Without it, the fan will run full speed all the time.
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January 27, 2014 11:51:32 AM

Im not sure i have a GIGABYTE GA-78LMT-USB3 Motherboard.
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Best solution

January 27, 2014 12:11:20 PM

The manual would indicate that your board does not control the speed of 3 pin fans. This is why it is always loud.

Your options are to.

A. get a fan controller(would allow you to adjust the speed to whatever you want) or fan speed adjustment cable(most give you at least an option to run the fan at 5 volts[much slower and some fans do not start on 5 volts, but will always ruin that speed]) Some even give you 7 volts as an option. Placing a 50 ohm resistor in line with the fans power would also slow it down to about 1200-1400 for most fans of that speed.
B. Get a PWM fan(like the NF F12, SP120 or even CoolerMaster Blade Master 120) OR get a quieter fan that you can stand to hear at full speed.
C. Build a PWM to Voltage converter. This is a DIY Project and only recommended if you like DIY stuff.

Link1 A high gain transistor or 2 in a Darlington configuration is required (the plans withe Zener Diode on page 2 do not need high gain transistors)
Link2 This guy makes and sells adapters, no clue what the shipping would cost. He also has the plans showing. A higher gain transistor never hurts with this plan as well
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January 27, 2014 12:14:07 PM

Thanks man
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January 27, 2014 12:51:58 PM

Please do post what you do setup in the end.
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July 10, 2015 5:43:49 AM

nukemaster said:

The pump should be plugged into a header that is NOT controlling the fan speed or even the power supply if you have the adapter to do so.


I'm sorry for bumping an old thread, but I really need to know this: why should we not control the pump speed? Is it really best to let it run at 100% all the time?
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July 10, 2015 5:57:06 AM

Many pumps will stall out(stop turning) at a sooner than fans. Some users also report more noise at certain speeds.

The manual for all of these units recommends not controlling the pump(some going as far as to use SATA power connectors or LP4 type connectors to power them.). This ensures full speed.

To add to this some pumps also control the fans, controlling PWM fans normally happens with a lower voltage signal while the fan gets a constant 12 volts. A pump running on lower voltage may not control the fans as intended.

Now while it is not recommended, most pumps will tolerate some level of under voltage. 7 is about as low as I would go and make sure you monitor temps and pump speed to make sure it starts at that voltage.
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July 10, 2015 6:22:54 AM

nukemaster said:
Many pumps will stall out(stop turning) at a sooner than fans. Some users also report more noise at certain speeds.

The manual for all of these units recommends not controlling the pump(some going as far as to use SATA power connectors or LP4 type connectors to power them.). This ensures full speed.

To add to this some pumps also control the fans, controlling PWM fans normally happens with a lower voltage signal while the fan gets a constant 12 volts. A pump running on lower voltage may not control the fans as intended.

Now while it is not recommended, most pumps will tolerate some level of under voltage. 7 is about as low as I would go and make sure you monitor temps and pump speed to make sure it starts at that voltage.

I see. I have a Corsair H55 too, and a case that comes with 2 fans. My mobo has only 2 fan headers: CPU_FAN and CHA_FAN. I found out CPU_FAN will run 3-pin fans @100% at all times, while CHA_FAN allows variable speeds by voltage for 3-pin fans.

So I'm planning to plug the pump into the CPU_FAN so it runs full speed at all times, and the 3 fans (1 H55, 2 case) into the CHA_FAN header using a 1-to-3 splitter to control their speeds. I will set the CHA_FAN header to monitor CPU temp instead of MB temp in the BIOS. Is this good? I'm trying my best to keep my rig quiet
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July 10, 2015 7:12:59 AM

It is very common for cpu headers to not control 3 pin fans now(because all stock coolers come in PWM)

It should work, just do not use overly high powered fans on a splitter. The board can only provide so much current.
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July 10, 2015 7:19:12 AM

nukemaster said:
It is very common for cpu headers to not control 3 pin fans now(because all stock coolers come in PWM)

It should work, just do not use overly high powered fans on a splitter. The board can only provide so much current.


I hope it works. There will be 1x 140mm and 2x 120mm fans on one header
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