Optimized for Silence The efficient design of the RM Series means minimal excess heat generation, & thanks to the Zero RPM fan mode the fan doesn't even need to spin under low to medium loads. The custom-designed fan has an optimized blade profile for low-turbulence airflow & near-silent operation even at full speed. & when you're pushing it hard, the thermal sensor controls the fan speed to ensure that it gets the cooling it needs without any extra noise. The components used to manufacture the RM Series are manufactured specifically for excellent performance & low audible noise. 80 PLUS Gold-certified Efficiency Highly efficient RM Series power supplies produce less heat & have lower operating costs. Flat black, Low-Profile Modular Cables You can use only the cables you need, & leave the rest in the box for fast, easy, & great-looking builds. Reliable, Continuous Power Delivery RM Series power ratings are continuous, not peak, for superior protection for your valuable PC. Corsair uses high-quality internal components, & RM Series power supplies are guaranteed to deliver clean, stable, continuous power.