A gigahertz is the same as 1,000 megahertz (MHz) or 1,000,000,000 Hz. This is commonly used only to measure the processing speeds of a computer .
For many years, computer CPU speeds were measured in megahertz, but ever since personal computers have generated the 1,000 Mhz mark since 2000, gigahertz has become a standard measurement unit.
Anyway, it is easy to say “2.4 Gigahertz” in place of “2,400 Megahertz”.
While gigahertz is most commonly used to measure processor speed, it is also used to measure the speed of another part of the computer, such as RAM and backside cache .
The speed of all these components, along with the other parts of the computer, greatly affects the overall performance of the computer.
So when you are comparing any computers, then remember that the number of gigahertz is not the only thing that matters, while other things still have the same contribution.