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This article mainly introduces the technical performance indicators of the computer, which has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, let the editor take you to know about it.

The technical performance index of the computer mainly refers to the word length, operation speed, internal and external memory capacity and the main frequency of CPU; the larger the word length, the faster the computer processes data; the operation speed refers to the number of instructions that can be executed per second; the larger the internal and external memory capacity, the larger the amount of data that can be processed; the main frequency refers to the clock frequency of the CPU kernel.

The technical performance index of computer mainly refers to word length, operation speed, internal / external memory capacity and CPU main frequency.

The main performance indicators of the computer:

1. Operation speed

Operation speed is an important index to measure the performance of computer. The so-called computer operation speed (average operation speed) refers to the number of instructions that can be executed per second, which is generally described as "millions of instructions per second" (mips,MillionInstructionPerSecond). On the same computer, the time required to perform different operations may be different, so different methods are often used to describe the operation speed. Commonly used are CPU clock frequency (main frequency), average number of execution instructions per second (ips) and so on. Microcomputer generally uses the main frequency to describe the operation speed, for example, the main frequency of Pentium/133 is 133 MHz, the main frequency of Pentium Ⅲ / 800 is 800 MHz, and the main frequency of Pentium41.5G is 1.5 GHz. Generally speaking, the higher the dominant frequency, the faster the operation speed.

2. Word length

A set of binary numbers processed by a computer at the same time is called a computer's "word", and the number of digits of this set of binary numbers is "word length". Other indicators are the same, the larger the word length, the faster the computer can process the data. Early microcomputers generally had word lengths of 8 and 16 bits. At present, 586 (Pentium,PentiumPro,Pentium Ⅱ, Pentium Ⅲ, Pentium4) is mostly 32-bit, and now most people install 64-bit.

3. The capacity of internal memory

Internal memory, also referred to as main memory, is a memory that can be accessed directly by CPU. The programs to be executed and the data to be processed are stored in main memory. The size of the internal memory capacity reflects the computer's ability to store information in real time. With the upgrade of operating system, the continuous enrichment of application software and the continuous expansion of functions, people's demand for computer memory capacity is also increasing. Currently, running Windows95 or Windows98 operating systems requires at least 16MB of memory, while WindowsXP requires more than 128m of memory. The larger the memory capacity, the more powerful the system function and the larger the amount of data that can be processed.

4. Capacity of external memory

External storage capacity usually refers to the hard disk capacity (including internal and removable hard drives). The larger the external memory capacity, the more information can be stored, and the more applications can be installed. At present, the capacity of hard disk generally ranges from 10g to 60G, and some even reach 120g.

5. The speed of Icano

The speed of the host Iripple O depends on the design of the Ithumb O bus. This has little to do with slow devices (such as keyboards, printers), but has a significant effect on high-speed devices. For example, for the current hard disk, its external transfer rate has reached more than 20MB/S, 4OMB/S.

6. Video memory

The performance of video memory is determined by two factors, one is capacity, the other is bandwidth. Capacity is easy to understand, and its size determines how much data can be cached. In terms of bandwidth, it can be understood as the channel for data exchange between the video memory and the core. The greater the bandwidth, the faster the data exchange. Therefore, capacity and bandwidth are the key factors to measure the performance of video memory.

7. Hard disk speed

The rotational speed (RotationalSpeed) is the rotation speed of the motor spindle in the hard disk, that is, the maximum number of revolutions that the hard disk can complete in one minute. The speed of the speed is one of the important parameters to mark the grade of the hard disk, it is one of the key factors to determine the internal transfer rate of the hard disk, and directly affects the speed of the hard disk to a great extent.

8. Main frequency

The main frequency of the CPU, that is, the clock rate at which the CPU kernel works. The so-and-so CPU is commonly referred to as the number of megahertz, and this number of megahertz is the "main frequency of CPU".

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