What does cpu frequency mean?

cpu frequency means the frequency at which the CPU operates. The CPU frequency determines the running speed of the computing technology. The unit is Hz; the computing speed of the CPU also depends on the performance indicators of various aspects of the CPU pipeline. Since the main The frequency does not directly represent the computing speed, so under certain circumstances, it is likely that a CPU with a higher clock speed will actually have a lower computing speed. Therefore, the clock frequency is only one aspect of the CPU's performance, and does not represent the overall performance of the CPU. performance.

The operating environment of this tutorial: Windows 10 system, DELL G3 computer.

What does cpu frequency mean?

CPU frequency, that is, the clock frequency of the CPU, refers to the frequency at which the CPU operates during operation and determines the running speed of computing technology. The unit is Hz.

CPU frequency determines the running speed of the computer. With the development of computers, the main frequency has developed from the past MHZ to the current GHZ (1GHZ=10^3MHZ=10^6KHZ= 10^9HZ).

Generally speaking, in the same series of microprocessors, the higher the main frequency, the faster the computer. However, for different types of processors, it can only be used as a parameter for reference. In addition, the computing speed of the CPU also depends on the performance indicators of various aspects of the CPU's pipeline. Since the main frequency does not directly represent the computing speed, under certain circumstances, a CPU with a higher main frequency may have a lower actual computing speed. Therefore, the main frequency is only one aspect of CPU performance and does not represent the overall performance of the CPU.

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When it comes to processor frequency, two concepts closely related to it must be mentioned: times Frequency and FSB, FSB is the base frequency of the CPU, and the unit is also MHz. The FSB is the speed at which the CPU and the motherboard run synchronously. In most computer systems, the FSB is also the speed at which the memory and the motherboard run synchronously. In this way, it can be understood that the FSB of the CPU is directly connected to the memory. pass to achieve a synchronous operating state between the two; the frequency multiplier is the ratio of the main frequency to the external frequency.

Main frequency, FSB, multiplier, the relationship is: main frequency = FSB × multiplier. Early CPUs did not have the concept of "frequency multiplication". At that time, the main frequency and the speed of the system bus were the same. With the development of technology, the speed of CPU is getting faster and faster, and accessories such as memory and hard disk are gradually unable to keep up with the speed of CPU. The emergence of frequency multiplier solves this problem. It allows components such as memory to still work at a relatively low speed. Under the system bus frequency, the main frequency of the CPU can be infinitely increased by frequency multiplication (theoretically). We can think of the FSB as a production line in the machine, and the frequency multiplier is the number of production lines. The production speed of a machine (main frequency) is naturally the speed of the production line (FSB) multiplied by the number of production lines. (multiplier). Manufacturers have basically locked the multiplier. The only way to overclock is to start with the FSB. By matching the multiplier and the FSB, you can set the jumpers on the motherboard or set soft overclocking in the BIOS, thereby partially improving the overall performance of the computer. When purchasing, try to pay attention to the FSB of the CPU.

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