The clock speed of a CPU is measured in hertz (Hz). More commonly, it is represented in kilohertz (kHz), megahertz (MHz), or gigahertz (GHz):
- Hertz (Hz): 1 cycle per second
- Kilohertz (kHz): 1,000 cycles per second
- Megahertz (MHz): 1,000,000 cycles per second
- Gigahertz (GHz): 1,000,000,000 cycles per second
Most modern CPUs have clock speeds measured in gigahertz (GHz), indicating billions of cycles per second. For example, a CPU with a clock speed of 3.0 GHz performs 3 billion cycles per second.
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