ASRock mobo case fan control

[Charlie98]

I recently installed an ASRock H81 board in a new build (DESK2 in sig below...) and have a Fractal 3-pin fan hooked up to the 4-pin case fan header, but it's running at a default 1200+/- RPM and is kind of noisy.

Does the ASRock board have a way to undervolt that case fan header? There is case fan control in the BIOS, but I'm guessing that's for a 4-pin PWM. I'm not that familiar with the ASRock BIOS...

 

[Ketchup]

The way I understand it, you should be fine. The BIOS allows you to set speed by CPU temps, and the CPU and chassis fans be set to different temps, so not having the PWM on the fan itself should not matter.

 

[Charlie98]

The way I understand it, you should be fine. The BIOS allows you to set speed by CPU temps, and the CPU and chassis fans be set to different temps, so not having the PWM on the fan itself should not matter.

Well... that's what I thought. I went in and remapped the fan curve but it didn't make any difference.

 

[Ketchup]

Well... that's what I thought. I went in and remapped the fan curve but it didn't make any difference.

Oh snap. I can't believe they are not being entirely correct and clear in their manual!!

Seriously though, I wonder that feature is on a particular header. That one has 2 case fan headers, right?

Out of curiosity, is your CPU fan a 4-pin?

Are you on BIOS 1.40 yet?

 

[pauldun170]

I recently installed an ASRock H81 board in a new build (DESK2 in sig below...) and have a Fractal 3-pin fan hooked up to the 4-pin case fan header, but it's running at a default 1200+/- RPM and is kind of noisy.

Does the ASRock board have a way to undervolt that case fan header? There is case fan control in the BIOS, but I'm guessing that's for a 4-pin PWM. I'm not that familiar with the ASRock BIOS...

Hardware Health Event Monitoring Screen in UEFI
CPU Fan 1 & 2 Setting
Select a fan mode for CPU Fans 1&2, or choose Customize to set 5 CPU
temperatures and assign a respective fan speed for each temperature.
Chassis Fan 1 Setting
Select a fan mode for Chassis Fan 1, or choose Customize to set 5 CPU temperatures
and assign a respective fan speed for each temperature.
Chassis Fan 2 Setting
Select a fan mode for Chassis Fan 2, or choose Customize to set 5 CPU temperatures
and assign a respective fan speed for each temperature.

Set the target temperature between 45 and 55 (when this value is exceeded, the fans will speed up to maintain that temp)
Set target fan speed to the lowest value your fan will except. Some fans will not start if this value is to low (this is the default speed of your fans when the temperature of the CPU is below the target temperature).

After you make the change, save and exit. The change should reflect on boot. Keep doing it until its as quiet as you want AND the CPU is able to remain cool..

If you want to fine tune it more, Asrock has the A-Tuning utility that comes with the board. Use the FAN-Tastic Tuning utility by setting up the graph.

Make sure you verify the fan speed changes (either in bios or using windows utility).

 

[pauldun170]

You should have 5 fan headers
3 by the CPU socket
CPU fan 1 (4 pin) : Self explanatory
CPU fan 2 (3 pin) : Self explanatory
PSU Fan : should be self explanatory but this one always makes me look twice at my PSUs for missing cables

1 by the atx power connector
Chassis Fan 1 (4 pin)

1 by the 2 usb headers along the edge of board.
Chassis Fan 2 (3 pin)


You can plug a 3 pin fan connector into the 4 pin headers. The motherboard will control the speed by lowering the voltage.

What Fractal fan are you using?

 

[pauldun170]

note: If your fan is just a loud design then here are a couple of alternatives
http://www.silentpcreview.com/forums/viewtopic.php?f=9&t=16393

 

[Charlie98]

Oh snap. I can't believe they are not being entirely correct and clear in their manual!!

Seriously though, I wonder that feature is on a particular header. That one has 2 case fan headers, right?

Out of curiosity, is your CPU fan a 4-pin?

Are you on BIOS 1.40 yet?

Surely you jest... 😵 The ASRock manual makes the Gigabyte manual look like the Magna Carta.

3 fan headers... 1 4-pin CPU, 1 3-pin case fan, 1 3-pin PSU

The CPU fan is a 4-pin Intel stock cooler. That is not the fan I have a problem with... the G3220 runs so cool it never spools up.

What Fractal fan are you using?

It's the standard 120mm case fan they ship in everything...

I did adjust mapping on the fan curve in the BIOS, but the case fan continues to run at 1250RPM.

 

[denis280]

can you adjust the the cpu fan header.it should be on auto.but change it to advance

 

[coffeejunkee]

See if you can control it using Speedfan (google how to configure first if you haven't used it before). Else it seems the cha_fan1 header is pwm only.