COMPUTER FAN - Beta 400 Plus Features: Sintered powder U-shape heatpipe 4 pcs perform efficiently in heat dissipation. All copper base conduct heat effectively. High density stacked fins enlarge the effective area for heat dissipation. High performance circular fan 92× 32mm, PWM function, silent solution. Spring clip, easy installation. Metallic Logo, fashionable design Super silent CPU COOLING FAN / CPU COOLER FAN / CPU FAN / CPU COOLER. Technical Parameter: Fan Dimension 92X32mm Started Voltage 7VDC Overall Dimension 116X96X80mm Rated Current 0.18± 10% A Heatsink Material Cu Base+ Al Fin+ Heatpipe 4 pcs Power Input 2.16W Weight 385g Bearing Type Hydro Bearing Rated Voltage 12VDC Fan Speed 800± 150~ 2800± 10% RPM Operating Voltage 10.8-13.2VDC Max Air Flow 55.75CFM Application for: AMD Phenom X4 9850 ( AM2+ ) AMD Phenom X4 9100e ( AM2+ ) AMD Athlon 64 X2 6400+ ( 939/ AM2) AMD Athlon 64 FX-62 ( 939/ 940/ AM2) AMD Athlon 64 4000+ ( 754/ 939/ AM2) All Sempron series ( 754/ 939/ AM2)