PWM fans vs standard fans

[Tigurius]

I am currently building a system with the Corsair 800D case and an ASUS Sabertooth X79 mb. The CPU, a 3930K is liquid cooled. My question is are there any benefits to using PWM fans over the standard fans? I've read that the 800D case is meant for water cooling and I want to improve airflow. My gpu is a GTX 690.

 

[popatim]

PWM fans can be controlled by the system if they are plugged into the motherbd. Other fans run at full speed unless plugged into a controller.