Type II Btx Cooler Heat Sink Dimension - 90x42.42 mm (Copper) Fan Dimension - 95x25mm Fan Speed - 0~ 4200+- 10% R.P.M. Airflow - 71.78 CFM / Voltage - 12 VDC / Noise - 16 dBA (Min.) Applications - Pentium D LGA775 Dual Core 3.4GHz and higher / Pentium 4 LGA775 3.8GHz and higher / Celeron D LGA775 3.46GHz and higher