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Differences Between a DC Cooling Fan and an AC Fan
Both AC and DC cooling fans can cool a computer or processor however; they each have very distinct differences. The first of their differences starts with the types of electricity they use. AC fans use alternating current, which can quickly change its direction. The DC fan uses direct current and can only flow in one direction. Another major difference is how much voltage they each use. AC fans generally use more and are often used in systems that can operate in spite of its high electromagnetic interference. CPU cooling fans generate less electromagnetic interference without causing a disturbance in the operation of the unit.

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