The forum search function is pretty handy.
Copper Heat Sink Design for Pentium 4 1USystemsCPU Socket 478, 423, & P4 Xeon 603Rated Voltage 12 VDCRated Current 0.22 AMPPower Consumption 2.64 WBearing Type Ball BearingFan Speed 4300 RPMAirflow 27.2 CFMNoise Level 38.0 dBAOutline Dimension 70 X 70 X 10mmLife Time 50,000 Hrs