Features compliant intel atx12v v 231 the integrated active pfc pwm combo controller will increase the efficiency of exchange and make pfc higher than 99 up to 85 efficiency assembled copper al heatsink make cooling more efficient 14cm silent fan with pwm function modularized flat cabling design reduces the resistance of airflow by a regular cable layout and increases the cooling capability of system double layer emi filter protects from electromagnetic interference amp restrains n