A CPU Cooler is a device that attaches to the CPU of a computer to ensure the processor temperature remains within operational standards. The cooling device typically consists of aluminum or copper manufactured into a heatsink with the addition of a fan. Although more exotic methods, like water cooling, exist as well.

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The CPU is a high-activity component in any computer system. As such, it generates large amounts of heat that will degrade performance and could potentially damage the computer system if left unchecked. Most modern computer systems have built-in safeguards that will shut the system down if the temperature exceeds a specific limit, but this is obviously an inconvenient alternative to effective CPU thermal management. A CPU Cooler will help ensure the stability and longevity of a computer system as well as allow for performance gains depending on how aggressive the thermal management is.

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