Rain sends instructions to the CPU to make it work at a much lower temperature.
These advanced instructions are found in the Intel, Cyrix and AMD processors and make them work at a lower temperature without any loss of stability. This can prolong the life of your CPU, stopping the system from overheating.
Both this and other utilities stop being effective when one or more programs make intensive use of the processor, which means that if you overclock your CPU, it may be necessary to improve the cooling of the microprocessor.
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