FoxConn CMI-28-2S Socket 478 Heat Sink and Fan up to 2.8GHz FoxConn CMI-28-2S Socket 478 Heat Sink and Fan up to 2.8 GHz General Features: Aluminum Heat Sink Sleeve Bearing Fan Supports Intel Socket 478 Pentium 4 CPUs up to 2.8 GHz 3-pin motherboard cable attached Includes retaining clips Reduces CPU temperature Extends CPU life Air Flow : 27 CFM Speed: 3200 +/- 10% Noise: 28 dba Regulatory Approvals: CE UL