CPU frequency and computing power

1. 1. The meaning of CPU calculation once is that CPU performs "bit calculation" once, for example, 2 + 3 = 5, and binary is 0010 + 0011 = 0101. If there are three bits in total, the computer will calculate three times. 2. As for what this number is related to, that is, the higher the CPU frequency, the more the number of operations per unit time

2. The computing power of CPU is related to the number of CPU cores, the frequency of core and the ability of single clock cycle of core
the ability of double precision floating-point computing is commonly used to measure the scientific computing ability of CPU, that is, the ability to process 64 bit floating-point data

the processor supporting avx2 can perform 16 floating-point operations in one core and one clock cycle, Also known as 16flops
CPU power = number of cores x frequency of cores x 16flops
processors supporting avx512 can perform 32 floating-point operations in one core and one clock cycle, also known as 32flops
CPU power = number of cores x frequency of cores x 32flops

3. The main frequency of CPU is directly related to the computing power of CPU, but the more important is the architecture of CPU. For example, the former netbus architecture 3G is not as good as the present core architecture E5200

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6. There is a positive correlation between CPU frequency and computing speed

CPU frequency: the so-called main frequency is the clock frequency when the CPU works normally. Theoretically, the higher the main frequency of the CPU, the faster its speed is. Because the higher the frequency is, the more instructions are completed in the unit clock cycle, and the faster the speed is

CPU frequency is the clock frequency of CPU, which is the abbreviation of the working frequency of CPU (the number of synchronous pulses in one second)

Generally speaking, in the same series of microprocessors, the higher the main frequency, the faster the speed of the computer, but for different types of processors, it can only be used as a parameter for reference. In addition, the CPU operation speed also depends on the performance indicators of all aspects of the CPU pipeline

7. There is no direct relationship, but it is basically positive correlation, that is, the larger the main frequency is, the faster the operation speed is. Because the main frequency is the number of beats per second of the clock, just like the heart, the CPU will work only when it is at a high level, so to some extent, the larger the main frequency is, the faster the operation speed is

8. The main frequency is also called the clock frequency, the unit is MHz, which is used to represent the CPU's operation speed. Main frequency of CPU = external frequency × Frequency multiplication coefficient. Many people think that the main frequency determines the running speed of CPU, which is not only one-sided, but also biased for the server. So far, there is no definite formula that can realize the numerical relationship between the main frequency and the actual operation speed. Even Intel and AMD, the two major processor manufacturers, have great controversy on this point. We can see from the development trend of Intel's procts that Intel attaches great importance to the development of its main frequency. Like other processor manufacturers, someone once compared one fast 1g quanmeida with 2G Intel processor
therefore, the main frequency of the CPU has no direct relationship with the actual computing power of the CPU. The main frequency represents the oscillation speed of the digital pulse signal in the CPU. In Intel's processor procts, we can also see such examples: 1 GHz Itanium chip can perform almost as fast as 2.66 GHz Xeon / Opteron, or 1.5 GHz Itanium 2 can perform about as fast as 4 GHz Xeon / Opteron. The operation speed of CPU depends on the performance index of CPU pipeline
of course, the dominant frequency is related to the actual operation speed. It can only be said that the dominant frequency is only one aspect of the performance of CPU, not the overall performance of CPU.

9. Denver 60000 2010-07-01 the general rate is the rate of the rate of the memory, and the same type, the type of the CPU is the rate of the rate of the home, the maintenance, the meeting, the reception, the temperature and the like, and the high rate is excellent. The multinucleus CPU is a core of the core, and it is a considerable CPU. What do you mean? Answer: there are no differences in the GPU in the presence of GPU, and in the GPU clothing, and in the image of the spectator, there is a large number of the costumes in the form of the same, and of course, there is a large number of terms and conditions, and the high demand rate is high. The GPU provision of the Zheng Daigong Gong Gong, the ability to play more and more. What is GPU? Answer: Atlas shaped fixer. The concept of the CPU is the concept of the GPU before, and the amount of request is not high. In the absence of this, there is a single core to the core one, the GPU, the GPU approvals type operation, and the down load. In the meantime, there are a lot of things to do, and the shape of the atlas is large part of GPU, and the CPU is in the presence of the CPU.

10. CPU frequency - the working clock frequency (main frequency) of CPU is determined by two parts: external frequency and frequency multiplication, and the proct of the two is the main frequency. The so-called external frequency refers to the overall system bus frequency, which is not equal to the frequency of front-end bus that is often heard, but the frequency of front-end bus is only determined by the external frequency - front-end bus is the bus connecting CPU and North Bridge chip

the front-end bus frequency of AMD system is twice the external frequency, while that of P4 platform is four times. Only on the old Athlon and PIII / PII platforms, the front-end bus frequency is equal to the external frequency<

at present, the external frequencies of mainstream CPUs are mostly 100MHz, 133MHz and 166MHz. Intel's P4 based on 200MHz external frequency (i.e. FSB = 800MHz) has just been released, while Athlon of AMD's 800MHz front-end bus has not yet been released. The full name of frequency doubling is frequency doubling coefficient. There is a ratio relationship between CPU clock frequency and external frequency. This ratio is frequency doubling coefficient, which is referred to as frequency doubling. Frequency doubling is a number based on natural number, with 0.5 as interval, such as 11.5, 12, 13. Now the highest frequency doubling can reach nearly 25. For example, P4 2.8g CPU is obtained by multiplying the external frequency of 133MHz by the frequency doubling of 21

on the whole, overclocking is to manually set the external frequency and frequency doubling of CPU to make CPU work at a higher frequency. However, at present, Intel's CPU frequency doubling is locked, and only a few amd Athlon XP procts do not lock the frequency doubling. Therefore, most of the current overclocking is based on the external frequency, That is to say, increase the frequency of external bus, the multiplier, to increase the dominant frequency of CPU

nowadays, many motherboard manufacturers have made user-friendly overclocking function, so the method of overclocking has changed from hard overclocking to more convenient and simpler soft overclocking

the so-called hard overfrequency refers to setting the external frequency, CPU, memory and other working voltage manually through the jumper or dip switch on the main board, while the soft overfrequency refers to setting the parameters of external frequency, frequency doubling and voltage of each part in the system's Bois, Some motherboard manufacturers have also introced the fool overclocking function (such as red storm of Sotec), which means that the motherboard can automatically increase the external frequency in 1MHz, and automatically find the highest frequency for users to make CPU run stably. This is a fool like automatic overclocking

in addition, some motherboards for overclocking players may also have debug indicator lights to provide instructions and help for overclocking players. The debug indicator light [figure debug] is on a debug card, with two digits and seven segments as the display. During the startup process, the computer will automatically check whether the hardware is connected and working properly, If there is a problem in any part, the code of the part will be displayed, so that users can easily find out which part is the problem according to the manual, so that the overclocking person can find the problem and solve the problem. If there is no problem in the end and the system is successfully started, it will display & # 39; FF' It also indicates that everything is normal.