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the speed of a CPU is measured in --------
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The clock speed is measured in cycles per second, and one cycle per second is known as 1 hertz. This means that a CPU with a clock speed of 2 gigahertz (GHz) can carry out two thousand million (or two billion) cycles per second. The higher the clock speed a CPU has, the faster it can process instructions.
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Answer: The CPU's clock speed, expressed in GHz, tracks how many cycles it completes each second (gigahertz).
Explanation:
- Technically speaking, a "cycle" is a pulse timed by an internal oscillator, but for our purposes, they serve as a foundational measure of a CPU's speed.
- The CPU contains billions of transistors that open and close during each cycle. A CPU running at 3.2 GHz completes 3.2 billion cycles every second. (The speed of earlier CPUs was expressed in megahertz, or millions of cycles per second.)
- In certain circumstances, one instruction may be processed over several clock cycles, whereas in other cases, numerous instructions may be finished in a single clock cycle.
- It's better to compare clock speeds among CPUs from the same brand and generation because different CPU designs execute instructions differently.
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