Intel Copper Core Socket 478 Heat Sink and Fan up to 3.40GHz Intel Socket 478 C91249-002 Heat Sink and Fan Aluminum heat sink / Copper core / 2.5-inch fan Supports Socket 478 Intel Pentium 4 and Celeron processors 2.8E, 3 GHz to 3.40 GHz 3-pin fan connector (approximately 11" cord length from fan to 3-pin connector) Heat sink retention clip