NP423S SPECIFICATION 
Gross Weight 260 g
Dimensions L63.5 *W89 *H57 (mm)
Heat Sink Dimensions L63.5 * W89 * H32 (mm)
Heat Sink Fin32±1Pin
Heat Sink Material  Aluminum
Clip Material Steel SK7
Fan Bearing Two Ball  Bearing
Fan Dimensions L60 * W60 * H20(mm)
Fan MTBF 50,000Hours
Power Connector Molex 2510 3 Pin
Output Signal Yes
Fan RPM 5500 ±10 % RPM
Air Flow 28.95 ±5 % CFM 
Noise 41.5 dB/A
Fan Safety Standard UL
Rated Voltage DC 12 V
Rated Current 0.28A
Operating Range 6.0 ~ 13.8 VDC
Rated Input 3.36W
FD4230 SPECIFICATION
Higher than P4 1.7GHz frequency CPU
Weight: 260g
Heat Sink Fin: 32 ± 1 Pin
Dimensions:  L63.5*W89*H57 (mm)
Heat Sink Size: L63.5*W89*H32 (mm) 
Fan RPM: 5500 ±10 % RPM
Air Flow: 28.95 ±5 % CFM 
       
  NP423S CPU Cooler
           INTEL P4 Socket 423
 Heat Sink: FD4230