CX Series PSUs are an excellent choice for basic system builds and desktop PC computer upgrades. Available in a variety of power configurations, and including features that are normally found only on premium PSUs. Ultra-quiet 120mm fan delivers excellent airflow at an exceptionally low noise level by varying fan speed in response to temperature. 80 plus bronze certified. 0.99 active power factor correction provides clean and reliable power. 600 watts of reliable, continuous power delivery. SLI_Crossfire compatible. Manufacturers 3 year guarantee.