Shulou(Shulou.com)05/31 Report--

This article mainly introduces the relevant knowledge of the use of the computer memory bar, the content is detailed and easy to understand, the operation is simple and fast, and has a certain reference value. I believe you will gain something after reading this computer memory bar. Let's take a look.

The image above shows the speed latency of mechanical hard drive, solid state drive, memory and cpu cache, respectively. Since virtual memory is simulated using a hard disk, its speed must not be comparable to that of real memory.

In a computer, all running programs need to be executed through memory, which can be divided into physical memory and virtual memory. Physical memory size refers to the capacity of memory bars. Because the physical memory capacity is relatively small, it is easy to fill all kinds of applications and data. In order to solve this problem, WINDOWS uses virtual memory technology, that is, to take out part of the hard disk space to do "memory" to make up for the lack of computer RAM space.

Cpu will frequently access memory, it must have a high enough read and write speed, so that it will not become a bottleneck of system performance. So how much is the speed difference between memory and "virtual memory" (that is, hard disk)?

Take the faster SSD as an example, and memory has more access to small data. Take the performance of 4K as an example:

The performance of SSD, and its 4K read performance is 19.99MB/s

Then simulate the memory as a virtual hard disk. Here is the test data of DDR3 1600 memory:

Memory performance, whose 4K read speed is 1975MB/s.

As you can see, the read and write performance of memory is more than a hundred times that of hard disk (SSD), and if it is replaced by a mechanical hard disk, it will be more than a thousand times. when your computer memory capacity is relatively small, you often feel stuck, mainly because the "virtual memory" is too slow.

This is the end of the article on "what is the use of computer memory?" Thank you for your reading. I believe you all have a certain understanding of the knowledge of "what is the use of computer memory bars". If you want to learn more knowledge, you are welcome to follow the industry information channel.

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