The clock rate is the frequency at which a CPU is running. It is the rate in cycles per second (measured in hertz) or the frequency of the clock in any synchronous circuit. In general, many people think a higher clock speed means a faster processor, but other factors are also come into to picture. You can not compare its performance based on only clock speed. Depend upon the architecture design of the</mark> Processor, In some CPUs, a single instruction may be performed in a single clock cycle. In some CPUs, many instructions might be performed in a single clock cycle. For Example, An Intel Core i5 1st generation has a clock speed of 3.2 GHz and the latest Intel Core i5 10th generation has a clock speed of 1.6 GHz. Note: it is important to compare processors from the same brand and generation.