Memory stick selection skills

Memory stick It is a channel connecting the CPU and other devices, and plays the role of buffering and data exchange. When the CPU is working, it needs to read data from external storage such as hard disks, but because the "warehouse" of the hard disk is too large, and it is also "far away" from the CPU, the speed of transporting "raw materials" data It is relatively slow, resulting in a great reduction in the production efficiency of the CPU! In order to solve this problem, people built a "small warehouse" between the CPU and the external memory. Generally, the running speed and computing speed of all computers depend on the memory module of the computer. Whether a computer can play its original ability, the memory stick plays an irreplaceable role, then how should we choose the memory stick, and what should we pay attention to when choosing? Today, the editor of computer network technology will talk to you about the points that need to be paid attention to when purchasing memory sticks:

1. Compatibility   The first thing to consider when choosing a memory module is the memory module compatibility, that is, whether it can be used on your computer. Please pay attention to the following 4 points:

1. The era of memory sticks is still "replacing", the common ones are DDR3 and DDR4 There are two types. Before buying, please check whether your computer is DDR3 or DDR4. These two frequencies are different and not connected. Don't complain about other people's memory modules after buying them.< /span>

2. Platform type, that is, desktops, notebooks and servers, and the memory sticks they use The sizes of the memory sticks are different. When purchasing memory sticks, you must tell the merchant what type of computer your computer is, so that the computer cannot be used.

3. Does the motherboard support it? Some cheap motherboards do not support too much or too much memory When you go to buy a memory stick, you must first look at the maximum memory supported by your motherboard and the number of memory stick slots on your motherboard. 4. Brand compatibility. If your computer is a brand machine or an all-in-one machine, then you are replacing the memory. It is best to find your original brand of memory stick, because it is preconceived, your other hardware has been adapted for a long time, your memory brand, when you change to other new brands, there may be unexpected effects.

5. There are the following reasons for the incompatibility between the memory and the motherboard: span>

1 The memory stick is not standardized, and the memory stick is a little thin. When the memory is inserted into the memory slot, there is a certain gap.

  (2) The gold fingers of the memory stick have poor craftsmanship, and the surface of the gold fingers is poorly plated. In the long-term use process, the oxide layer on the surface of the gold finger gradually thickens, and when it accumulates to a certain extent, it will cause poor memory contact, and the memory will alarm when it is turned on.

 ⑶The quality of the memory slot is poor, the contact between the reed and the gold finger of the memory stick is not real, There are always hidden dangers in the process of use, and it will not light up for a certain period of time, and the alarm will be turned on.

  ⑷ Then there is the pure incompatibility: a sliver, on some motherboards It works fine, but when it comes to this motherboard, it often freezes or fails to start normally. This is a typical incompatibility situation.

Second, the memory capacity

It can be said that the capacity of memory sticks is getting bigger and bigger. Remember that 512MB used to be considered the top match. Now, even 64G memory sticks have appeared, but the price is also very expensive. How big should we choose? The editor personally thinks it is suitable. Most households in China now use 2GB memory sticks (4GB), which is enough for ordinary use and ordinary games. However, if you are a professional server or multimedia player, you can buy a larger memory. The capacity of the memory stick is not large, it is suitable for you.

3. Frequency of memory modules

The CPU has a frequency, and of course there is also a memory module. Of course, the higher the frequency of the memory stick, the better. The higher the frequency, the faster it is. However, you should refer to the compatibility above when choosing the frequency of your memory stick. As long as the computer is compatible and economic conditions permit, of course you have bought it. The main frequency of the memory is the same as the main frequency of the CPU. It is used to represent the speed of the memory, which represents the highest operating frequency that the memory can achieve. Memory frequency is measured in MHz (megahertz). The higher the memory frequency is, to a certain extent, the faster the memory can achieve. The main frequency of the memory determines the maximum frequency at which the memory can work normally.

Currently the more mainstream memory frequencies are 333MHz and 400MHz DDR memory, 667MHz, 800MHz and 1066MHz DDR2 Memory, 1066MHz, 1333MHz, 1600MHz DDR3 memory, 2133MHz, 2400MHz, 2666MHz, 2800MHz, 3000MHz, 3200MHz DDR4 memory

Four. Brand

There are also bad brands of memory sticks. It is recommended that you buy memory sticks from those big brands. The quality and after-sale service of big brands will be relatively better. Don't be greedy for the cheap ones at very low prices, it's better to buy a memory stick with peace of mind. Mainstream memory stick brands are: Kingston, Samsung, ADATA, etc.