VRM Controller: The VRM controller is a microchip that acts as the brain of the VRM. It coordinates and controls the various components of the VRM to ensure proper voltage regulation and power delivery. The VRM controller communicates with the PWM controller, monitors temperature and voltage levels, and adjusts settings as needed to maintain ...
On every motherboard exists a circuit near the CPU called the voltage regulator module, or VRM. The VRM's job is to make the power from the power supply usable for the CPU, and help stabilize it, so to speak. Were it not for the VRM, your CPU wouldn't even work! The RAM also has a much smaller, simpler VRM next to the RAM slots.