Intel Socket 478 Heat Sink and Fan for Intel Pentium 4 and Intel Celeron processors up to 2.4GHz. The heat sink has a three wire connector to power the fan, and comes with the retention clips. These are Intel Branded heat sinks. They all meet the heat dissipation requirements for a processor up to 2.4GHz, although they are various part numbers. We do not have large quantities of any specific part number. Please call us if there is a specific part number that you need, as we might have it.