Gigahertz (GHz) is a unit of frequency that measures cycles per second, specifically one billion cycles. It is commonly used to describe the clock speed of computer processors, indicating how many operations a CPU can perform in one second. Higher gigahertz values generally suggest faster processing capabilities, which can lead to improved performance in tasks such as gaming, video editing, and multitasking. In addition to computer processors, gigahertz is also relevant in telecommunications, where it measures the frequency of radio waves. For example, Wi-Fi networks often operate in the 2.4 GHz and 5 GHz bands, affecting data transfer speeds and range.