Specifications:
Details:

How to Upgrade a CPU Cooler
Instructions
Package Included:
If you purchased your computer "off the shelf"you must open up the computer case, locate the CPU on the motherboard and see if it is cooled by a fan. If you have a CPU of 200 MHz or better you definitely need a CPU fan to cool it. We strongly advise all CPUs to have cooling fans, however.
Unless you have a very old computer with a low MHz, your CPU should have a fan. The old computers had such low MHz, the case fan that cooled the computer case was sufficient. Since the MHz produce heat (see above), many of the modern PCs will come with a fan and heat sink installed on the CPU.
Here are some facts that might help you reduce the noise of your computer:
1. The more airflow within your computer - the more noise.
2. Obstructions along the path of the airflow will create noise.
3. The higher speed fan will generate greater noise than a lower speed fan.
4. A larger size fan will generate lower noise level than a smaller size fan for the same amount of airflow.
5. The higher voltage applied to the fan will generate higher noise level.
Fan design can reduce noise level therefore users should choose reliable fans to avoid excessive noise.