What are the criteria for judging the quality of a computer

Performance metrics for your computer.

The main technical performance indicators of the computer are: main frequency, word length, memory capacity, access cycle, computing speed and other indicators.

1. Main frequency (clock frequency): refers to the number of pulses output by the computer CPU per unit time. It largely determines how fast your computer runs. Unit: mhz.

2. Word length: refers to the number of bits of binary data that can be processed by the computing parts of the computer at the same time. The word length determines the accuracy of the computer's calculations.

3. Memory capacity: refers to the total number of bytes of information that can be stored in the memory memory. It can often be used as a byte with 8 binary bits (bits).

4. Access cycle: the memory is independent for two consecutive times"Read"or"Write"The minimum time required for operation, in nanoseconds (ns, 1ns = 10-9s). The memory is completed once"Read"or"Write"The time required for the operation is called the access time (or read and write time) of the memory.

5. Computing speed: It is a comprehensive indicator, and the unit is MIPS (million instruction seconds). The factors that affect the computing speed are mainly the main frequency and access cycle, and the word length and storage capacity also have an impact.

Other indicators: machine compatibility (including data and file compatibility, program compatibility, system compatibility and equipment compatibility), system reliability (MTBF), maintainability of the system (MTTR), maximum number of external devices allowed to be configured by the machine, graphics and image processing capacity of the computer system, audio input and output quality. Chinese character processing capabilities, database management systems, network functions, etc.

The performance** ratio is a comprehensive measure of a computer's performance.

You can use some testing software, such as PCMark DMark and other software, to run a score to see how well you can get a general idea of the overall level of your computer.

<>1. Word length. Refers to the number of bits of binary data that the CPU can directly process, which determines the accuracy, function, and speed of the computer. The longer the word length, the stronger the processing power of the computer, and the higher the accuracy, according to the word length of the computer, it can be divided into 8-bit computers (such as early Apple computers (such as 286 microcomputer computers, 64-bit computers).

Of course, 64-bit CPUs are now the mainstream, and if users buy a new computer, they should consider a 64-bit rental computer.

2. Speed. It mainly includes computing speed and storage speedComputing speed: expressed by how many instructions can be executed per second, the unit is generally MIPS (million instructions per second). The current PC computing speed is more than 1500 mips.

Storage speed: The time it takes for memory to complete sequential read or write operations. The minimum time required to read and write the code twice in a row is called the access cycle.

In addition, computer speed also includes network speed, which is the speed at which data is transmitted over a network. Nowadays, it is common to refer to the transmission rate of a network in terms of "bandwidth".

3. Main frequency. Refers to the frequency of the CPU, which largely determines the computing speed of the computer. The higher the frequency, the faster the computer's computing speed.

The unit of the main frequency is MHz (megahertz), and the main frequency of popular CPUs is generally in, or even some larger.

4. Storage capacity.

Storage capacity, which collectively refers to the size of memory, external memory, and cache. Memory is measured in bytes. Storage capacity reflects the capacity of the memory to store data.

The configuration is sufficient, and the upgradeability is generally not considered.

The after-sales service is poor, so when you pay attention to the best service, you need to carefully check the performance and compatibility of the whole machine.

It's worth investing a little more in motherboards, CPUs, etc.

Accessories with well-known ones have a low chance of problems.

Don't worry too much about the old or new appearance.

It's all about hardware, displays, etc.

A bad host will be loud, and the display will not be clear.

Thank you for giving me a chance to answer the question, and I wish you happiness!

A computer that can meet your requirements is the best one. Here are a few simple examples that apply to the following applications:

1.Game lovers, there is no doubt that there must be a good graphics card, at least with a mainstream CPU, but also a large monitor, in addition to the game computer is usually high-load operation, stability and high performance are necessary, so it will also consume high power, therefore, home computers, I think the highest cost is the game console, all parts must be of excellent quality, buy a big brand.

2.Office computer Shen Travel, just used for surfing the Internet, office, browsing** or something. For this kind of demand, you only need to buy an integrated motherboard, and then match a low-end CPU, and the cost is quite low.

The most important thing for a wide stool office computer is not performance, but stability and cost performance, as well as power consumption. Recommend a match: Celeron E1400 Gigabyte G31 motherboard 2GB memory, with today's ** look at about 750 yuan to get it.

3.**Machine,Power consumption is the most important,Recommend a configuration,Intel's Astro Boy,The motherboard integrates the CPU and graphics card,Quite highly integrated,About 500 yuan,Plus hard disk and memory or something,The power consumption of the whole machine is 20 30 watts。

The above are just a few simple needs, it depends on what the landlord does.

The first must be the quality of the processor, and then the performance of the graphics card, and whether the type of graphics card is independent, the independent graphics card is better than the integrated graphics card, but it is a little more expensive than the ** of the book, and whether the heat dissipation of the computer is good or bad is also very important, and the others are not very important to you, such as hard disks, monitors, optical drives, or so on, most of them are the same.

Just test it according to a Master Lu.

As long as the performance of the computer can meet your own needs, it is a better computer.

Here's a quick run:

1. Dual-core processor + 2G memory + integrated graphics card + mechanical hard disk. The performance meets the requirements of small games such as surfing the Internet, watching movies, chatting, office, and playing chess;

2. Quad-core processor + 4G memory + independent graphics card + mechanical hard disk. In terms of performance, it can meet the requirements of surfing the Internet, watching movies, chatting, working, drawing, playing stand-alone games or online games;

3. Quad-core processor + 4 8G memory + mid-to-high-end independent graphics card + mechanical hard disk or solid state drive. In terms of performance, it can meet the requirements of surfing the Internet, watching movies, chatting, working, making pictures, playing large-scale stand-alone games or large-scale online games.

4. Six-core processor + 8G or more nickname + high-end independent graphics card + mechanical hard disk or solid state drive. In terms of performance, it can meet the requirements of surfing the Internet, watching movies, chatting, working, making pictures, and playing large-scale audiophile-level stand-alone games or large-scale online games.