Modern motherboards have come a long way when it comes to cooling options. Old boards might have come with one maybe two 3-pin fan headers which severally limited the overall cooling performance of that build. To make up for that casemodders would plug fans directly into the PSU or create elaborate fanbus systems to act as a fan distribution block. This allowed better cooling options using what was available.

Modern systems now come with a multitude of fan headers with PWM controls which can be mapped to certain system events. While this can be helpful for smaller aircooled builds they just cannot deliver the control needed to cool an elaborate multi radiator system where coolant temperatures run independent of system load.

In this review I'll be looking at the new Reeven Polariz fan controller. This is a triple channel unit meaning it will control up to three fans or three fan zones provided that the total output is less than 3.0A per channel (between 3 to 5 fans depending on power).