Clock Speed


However, it is important to note that a 1.8 GHz CPU is not necessarily twice as fast as a 900 MHz CPU. This is because different processors often use different architectures. For example, one processor may require more clock cycles to complete a multiplication instruction than another processor. If the 1.8 GHz CPU can complete a multiplication instruction in 4 cycles, while the 900 MHz CPU takes 6 cycles, the 1.8 GHz processor will perform the operation more than twice as fast as the 900 MHz processor. Conversely, if the 1.8 GHz processor takes more cycles to perform the same instruction, it will be less than 2x as fast as the 900 MHz processor.

Other factors also contribute to the overall performance of a computer. Examples include the number of processors, the bus speed, cache size, speed of the RAM, and HDD or SSD speed. Therefore, while the processor's clock speed is a significant indicator of how fast a computer is, it is not the only factor that matters.

Updated May 22, 2017

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