A megahertz (MHz) is a unit of frequency, not speed.

Here's the breakdown:

* Frequency refers to how often something repeats in a given time period.

* Speed refers to how fast something is moving.

Think of it like this:

* Frequency: How many times a second a clock ticks.

* Speed: How fast a car is going.

So, you can't say how "fast" a megahertz is. Instead, you can say:

* 1 MHz is equal to 1 million cycles per second.

* A computer processor running at 3.5 GHz has a clock speed of 3.5 billion cycles per second.

Let me know if you have any other questions!