We recommend making sure your fans are up to a high standard, for both cooler and quieter PC operation. Right now, our testing points to the Noctua NF-A12x25 PWM as the best PC fan today.

It is possible to control the fan speed not by fan PWM, but by PWM of DC input. In that case the fan can be stopped, but RPM data from the fan is messed up. We will start/stop the fan with a MOSFET ...

[Jason] was unlucky enough to have an older Dell computer ... up the the fan as the temperature increased. Of course, the standard way of controlling CPU fans these days is with PWM, so he built ...

Programming will require a micro USB cable and a computer. If you don’t already have one, you’ll probably want a fan, too. This circuit is meant for a 12V fan. I use this controller for the Noctua ...