Corsair 5000D PWM Fan Hub - control fan speed?

[tacoloco]

Hello, I recently built a PC using the Corsair 5000D Airflow case.

 

The case comes with 2 PWM fans included, attached to the fan hub.

 

I added 4 more fans and accidentally purchased regular DC (3 pin) fans - ARCTIC P12.

 

I plugged these into the fan hub and they work, but they’re too audible.

 

Can I reduce their speed and hopefully make them more quiet?

 

My understanding with DC fans is that i can reduce their speed, but i have to apply the same changes to all fans - is this correct?

 

Since the 6 fans (2 PWM and 4 DC) are all attached to the fan hub, can i reduce their speed via BIOS or specific software?

 

Would they need to be attached directly to the MOBO to use BIOS?

 

Thanks!!!

[c-attack]

16 minutes ago, tacoloco said:

I added 4 more fans and accidentally purchased regular DC (3 pin) fans - ARCTIC P12

You can't reduce their speed because PWM controllers keep a constant 12v signal.  DC fans alter their speed by raising/lowering that voltage.  You'll need to move those to the MB to regain speed control.  

[tacoloco]

thanks for your response.

So if i moved the DC fans to the FAN header on the MOBO and used a splitter for the 3 pin fans, i could control the fans via BIOS?

[c-attack]

Yes, they should be controllable through the bios fan settings. Most motherboard fan headers are dual DC/PWM with auto-detect switching. However, some motherboards still have PWM only CPU Fan headers. 

[Rebeldingo]

Just got the 5000D today and loving it but I have this exact problem and thanks for the answer this will fix my problem