Which of the following is true about a Gigahertz?

Gigahertz (GHz) is a unit of measurement that quantifies frequency, specifically representing one billion hertz. In computing, horsepower is represented in terms of speed, where Gigahertz is commonly used to indicate the speed of a CPU or other computer components.

The value in gigahertz tells us how many billions of cycles per second a processor can execute. For example, if a CPU operates at 3 GHz, it can perform 3 billion cycles in one second, meaning it has the capacity to process data and execute instructions at this rate.

Understanding this measurement is crucial because it helps gauge the performance potential of a CPU. Higher Gigahertz ratings typically equate to more instructions processed in a given timeframe, contributing to faster computing performance when executing tasks.

In contrast, other options do not accurately define what Gigahertz is or its role in computing: it does not pertain to data storage, a file system, or a term related to general hertz in the sense described by the choices.