The speed of a CPU (Central Processing Unit) is typically measured in Hertz (Hz), which represents the number of cycles per second. The CPU's speed refers to the frequency at which it can execute instructions and perform calculations.
In the past, CPU speeds were commonly measured in megahertz (MHz) or gigahertz (GHz). For example, a CPU with a clock speed of 3.4 GHz can perform 3.4 billion cycles per second. However, as technology has advanced, CPU speeds have increased significantly, and you may now encounter CPUs with speeds measured in terahertz (THz), representing trillions of cycles per second.
It is worth noting that CPU speed alone does not provide a complete measure of a processor's performance. Other factors like the number of cores, architectural design, cache size, and efficiency also contribute to overall computational power. Therefore, when evaluating CPUs, it is essential to consider multiple factors beyond just the clock speed to determine their actual performance capabilities.