Fan Control is a great utility that can help control all the fans on your PC at once. Here is a guide on how to use the tool for efficient system cooling.

3-pin fans still have an RPM sensor on them, and most mainboards can still vary their speed based on temperature. 3-pin fans use simple voltage control for adjust the fan speed. 4-pin units ...

While running, this tests measures the maximum and lowest RPM of all of the fans inside your case that are connected to one of the fan headers (3-pin or 4-pin) on your ASUS Z77 motherboard.