ASUS Socket 478 Copper Core/Aluminum Heat Sink & 2.75" Fan w/3-Pin Connector ASUS Socket 478 Copper Core/Aluminum Heat Sink Fan General Features: Aluminum Heatsink Thick copper core for greater cooling Socket 478 High-speed 2.75-inch fan Long life expectancy Tool free and easy assembly 3-pin fan connector (11-inch length, approximate) Supported Processors: Intel Pentium 4 (1.4 - 3.4 GHz) Intel Celeron (1.7 - 2.8 GHz) Celeron D (2.13 - 3.2 GHz) Intel Pentium 4 Extreme Edition (3.2, 3.4 GHz)