The main frequency of the CPU is equal to the FSB multiplied by the frequency multiplier. Any increase in the FSB or multiplier can increase the main frequency of the CPU; the main frequency is also called the clock frequency, and the unit is Hz. Indicates the computing speed of the CPU; the higher the main frequency, the faster the computer.
The operating environment of this article: Windows 7 system, DELL G3 computer
What is the main frequency of the CPU multiplied by what?
The main frequency of the CPU is equal to the FSB times the multiplier.
The multiplication of the FSB and the multiplier is the main frequency, so any increase in either can increase the main frequency of the CPU.
Main frequency, FSB, multiplier, the relationship is: main frequency = FSB × multiplier.
Main frequency introduction:
Main frequency is also called clock frequency, the unit is Hz, which is used to indicate the computing speed of the CPU. It determines the running speed of the computer. With the development of computers, 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. 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.
FSB and multiplier
The working frequency (main frequency) of the CPU includes two parts: the FSB and the multiplier. The product of the two is the main frequency. The full name of frequency multiplication is frequency multiplication coefficient. There is a ratio relationship between the main frequency of the CPU and the external frequency. This ratio is the frequency multiplication coefficient, referred to as frequency multiplication. The frequency multiplier can be from 1.5 all the way to 23 or higher, in intervals of 0.5. The multiplication of the FSB and the multiplier is the main frequency, so any increase in either can increase the main frequency of the CPU. Main frequency, external frequency, multiplier, their relationship formula: main frequency = external frequency × multiplier.
Processor frequency is calculated in millions of processor cycles per second. Generally, processors with higher MHz or GHz can improve the performance of computers running creative, entertainment, communication and productivity applications. However, the main frequency is only one aspect that affects the overall performance of the system. A machine with a high main frequency does not necessarily have a high overall performance.
With the development of technology, the speed of CPU is getting faster and faster, and accessories such as memory and hard disk can no longer keep up with the speed of CPU. The emergence of frequency multiplier solves this problem. It can make components such as memory still maintain the speed of CPU. It works at a relatively low system bus frequency, and the main frequency of the CPU can be infinitely increased through 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. To overclock, 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. So when buying, try to pay attention to the FSB of the CPU.
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