Noobie question about fans

DeadMetal17 · 17 Jul 2023 at 13:26

I didn't realize when I ordered the windowed Fractal North case that it was only the mesh version that included a fan hub, I have 3 Noctua NF-A12x25 fans at the front of the case is it safe to daisy chain them with 2 Y Splitters and an extension cable to run them onto 1 mobo header? (mobo is a Gigabyte Aorus B650 Elite AX)

alec · 17 Jul 2023 at 13:33

NF-A12x2 Max. input current: 0,14 A

In short, yes. Most motherboard fan headers can supply 1A, some go up to 2A, (usually labeled for pumps).

DeadMetal17 · 17 Jul 2023 at 13:45

Thanks @alec I did see a header labelled SYS_FAN_4_PUMP would I be better putting the 3 fans into that header? Would I need to change anything in the BIOS?

alec · 17 Jul 2023 at 13:57

shouldn't make much difference which header you use, all can supply enough power and all should provide fan speed tuning

BIOS side depends on what you want to achieve.
It should recognize PWM/DC nature of the fans automatically and would probably default to fan speed following CPU or System temperature.
If you want a static speed or different behaviour, Gigabyte BIOS section for Smart Fan is not too bad

gjbf1 · 17 Jul 2023 at 16:21

A header should handle 3-4 fans and the pump header 4+.