Underclocking

For microprocessors, the purpose is generally to decrease the need for heat dissipation devices or decrease the electrical power consumption. This can provide increased system stability in high-heat environments, or can allow a system to run with a lower airflow (and therefore quieter) cooling fan or without one at all.
Advantages

* Reduced heat generation.
* Reduced electrical power consumption.
* Longer hardware lifespan.
* Increased stability.
* Reduced noise from cooling parts due to reduced heat dissipation requirements.
* Increased battery life.
* Better compability with old applications

Source: http://en.wikipedia.org/wiki/Underclocking
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I don't get what this have to do with ur "internet" or w/e
Proof that I'm wrong, with links.