CPU 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. I54590 is a four core, four thread, three-level cache is 6MB. The i7 4790 is a 4-core 8-thread, 3-level cache of 8MB. CPU is not only determined by the dominant frequency.

4. If the program has been optimized for multi-core, that is to say, the multi-core CPU can also play its advantages. It is recommended to take a look at Lenovo's X6 server (the original IBMX Series), which can host four physical CPUs with strong performance.

5.

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6.

Main differences between CPU and GPU:

1. CPU is the central processing unit of computer

GPU is the graphics processor of computer

CPU is a very large-scale integrated circuit, which includes Alu arithmetic logic unit, cache memory and bus

CPU is the core of a computer's control and operation, its main function is to interpret the instructions issued by the computer and process the big data in the computer software

GPU is the abbreviation of image processor. It is a kind of microprocessor which is specially used for PC or embedded device to perform image operation

The work of GPU is similar to that of CPU mentioned above, but not entirely. It is designed to perform complex mathematical and geometric calculations. This game has high requirements in this respect, so many game players also have deep feelings for GPU

so CPU and GPU are two completely different things, they just sound the same

extended data:

CPU and GPU are different in design because they are used to deal with different tasks at first, and some tasks are similar to the problems that GPU is used to solve at first, so we use GPU to calculate. The operation speed of GPU depends on how many pupils are employed, and the operation speed of CPU depends on how powerful professors are employed, The professor's ability to deal with complex tasks is very good, but for less complex tasks, it still can't hold many people

of course, today's GPU can also do some slightly complicated work, which is equivalent to upgrading to the level of junior high school students and senior high school students, but it still needs CPU to feed data to the mouth before it can start to work, which is still managed by CPU

7. That is, specific performance / power consumption. GPU is much better than CPU. At the beginning, it was precisely because CPU had to spend a lot of power consumption and transistors on control circuit and cache that GPU was made into independent chip, and further GPGPU.

8. In the era of single core, the higher the CPU frequency, the better
in the multi-core era, the higher the frequency of a single core, the better the number of cores
at the same time, we have to consider the CPU manufacturing process, supported instruction set, architecture and so on, so the evaluation of a CPU is not based on the frequency, nor only on the number of cores
the GHz of CPU refers to the dominant frequency of CPU:
the dominant frequency of CPU, that is, the clock speed of CPU core
the megahertz of so and so CPU is usually said, and this megahertz is "the main frequency of CPU"
many people think that the main frequency of CPU is its running speed, but it is not
the dominant frequency of CPU indicates the speed of digital pulse signal oscillation in CPU, which is not directly related to the actual computing power of CPU
since the dominant frequency does not directly represent the operation speed, it is likely that the actual operation speed of CPU with higher dominant frequency will be lower under certain circumstances