Controlling Fans

Rensin · 9 Feb 2016 at 15:12

Hi,

I have 4x Noctua Industrial Fans connected to a PWM fan splitter cable (sata powered) connected direct to my motherboard and controlled by the fan control settings in the BIOS.

Is there a way of setting each fan speed rather than all the same speed using the pwm spliiter cable?

thanks.

Disco_P · 9 Feb 2016 at 17:05

They will need each receive a different voltage or PWM signal. Either plug them into different fan headers (3 or 4 pin shouldn't matter) or get a standalone fan controller like a grid+ v2.

PieEater · 9 Feb 2016 at 17:16

You want the PWM signal from the fan header on the motherboard to be different for each fan, the only way you'll do that is to fit inline resisters to the fans that you want to spin slower than the others but I don't think the Noctua ones work with the industrial fans.

Rensin · 10 Feb 2016 at 11:29

cheers guys, hows the CAM software for the grid+ v2? ... I had the grid+ v1 and found the software buggy and was always crashing plus could only control the fans down to about 1200rpm.

Think i have a spare sata powered fan splitter cable somewhere, will give this a try.

cadmunkey · 10 Feb 2016 at 11:35

Cam software has improved a lot recently, just wish it would control my H100i and then I'd ditch corsairs software completely.

P4Clock · 10 Feb 2016 at 11:49

Disco_P said:
standalone fan controller like a grid+ v2.

grid set all fans to same speed.

you would need a more expensive controller to have multipull fan speeds

cadmunkey · 10 Feb 2016 at 11:54

I bought one of these, works great:
https://www.overclockers.co.uk/lamptron-fc6-5.25-bay-fan-controller-black-bb-002-lp.html

Disco_P · 10 Feb 2016 at 12:16

P4Clock said:
grid set all fans to same speed.

you would need a more expensive controller to have multipull fan speeds

The grid+ (v1) set them all to the same a peed, v2 has 6 independent channels.

P4Clock · 10 Feb 2016 at 12:32

Disco_P said:
The grid+ (v1) set them all to the same a peed, v2 has 6 independent channels.

nope, i have one the CAM will only set same speeds still

Rensin · 10 Feb 2016 at 12:54

P4Clock said:
nope, i have one the CAM will only set same speeds still

just checked the NZXT site and does mention you can control each fan individually. Also reviews mention you can set a fan profile for each channel.

http://www.guru3d.com/news-story/nzxt-grid-v2-digital-fan-controller.html

Couldn't find a cable so will get 1 ordred.

Disco_P · 10 Feb 2016 at 13:11

The reason I bought, use and strongly recommend the grid+ v2 is the easy independent fan control of 6 channels. Don't know what issue P4Clock has but mine just works.

setter · 10 Feb 2016 at 14:30

cadmunkey said:
I bought one of these, works great:
https://www.overclockers.co.uk/lamptron-fc6-5.25-bay-fan-controller-black-bb-002-lp.html

Something like this is ideal. Not too expensive and can control many fans. I use an akasa FC6 30w per channel controller to run 9 case fans. Can switch fans off altogether if required.