So it lives, but does anyone have any idea why my case fan thinks it’s a helicopter and wants to take off?


So change from Auto to DC, which helped (its a 3 pin 120mm noctua) but it still spins at like 1700rpm. If I plug the old one back in, which is a cooler master, it’s absolutely fine. It’s also a 120mm 3pin.

No idea what’s going on with the Noctua. Gonna flip back to the Cooler Master for now I think.

@kev 3 pin == no speed control.

There is one for rpm reporting + 12V and GND. The speed control comes with a fourth pin.

@JosuGZ @kev You can control a 3-pin fan with DC (Voltage).
What are the spec of the Fan? Usually Noctua fans comes with adapters to lower the RPM if you can't get the motherboard to control it.

@Lembritt @JosuGZ it’s an NF-F12. Only other thing in the box was an extension cable and screws.

@kev @JosuGZ I can only find NF-F12 with 4-pin PWM?
The only 3-pin I can find is a special 5V fan and should not be used on a motherboard.
And the industrialPPC 2000 RPM fan.

@Lembritt @JosuGZ I assume it’s the 5v one then. I’ve ordered new 4 pin fans that are coming tomorrow. This s for the help, folks. I didn’t even know 3 pin vs 4 pin was a thing in the fan world.

@Lembritt @JosuGZ yup, just checked’s the 5v version. What. A. Moron! 🤦‍♂️

@kev Check the fan settings. You might be able to tweak it to silent mode

Sign in to participate in the conversation

Fosstodon is an English speaking Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.