EKL Xtrude Cooler 64 939/AM2 PWM. Noise level (high speed): 35 dB, Compatibility: -Sempron 3500+ Socket 754/939 -Sempron 3800+ Socket AM2 -Athlon 64 4000+ Socket 754/939 -Athlon 64 4. Material: Aluminium. Rated current: 0.35 A. Weight: 400 g. Dimensions (WxDxH): 80 x 78 x 45 mm, Power requirements: 12 VDC, Connector(s): 4 pin