NZXT RL-KRZ53-01. Purpose: Processor, Fan noise level (min): 21 dB, Fan noise level (max): 36 dB. Fan power consumption: 3.84 W, Fan voltage: 12 V, Fan current: 0.32 A. Type: Internal, Water block material: Copper/Plastic, Radiator material: Aluminium. Fan diameter: 12 cm, Fan dimensions (W x D x H): 120 x 26 x 120 mm, Radiator width: 27.5 cm