Each time, looking under the cover of the system unit case, one can observe trims consisting of microcircuits and chips. They even look like cartridges for the old Sega console. However, their purpose is completely different. Further in the article, a detailed description of the marking of RAM and its device will be given.
What is RAM?
Random access memory (random access memory) is a temporary storage of data on a computer. Its task is to download the requested data from its storage and leave it there in encrypted form. When the user repeatedly requests information, the RAM will give a result faster, since the source material has already been saved. This is the principle of operation on which decryption of the marking of RAM depends.
The most important indicators of RAM are frequency and timing. The frequency of operation shows how fast the data is being transmitted. This parameter is measured in megahertz (abbrev. MHz or MHz).
Timing is responsible for time delay. That is, it shows how much RAM is needed to process the request and return the result.
Form factors
In other words, this parameter can be called standardization of size. There are two types of RAM marking form factor - these are DIMM and SoDIMM.
The first format is suitable exclusively for desktop computers. This can be seen by looking at the connector in the motherboard. The length of this slot reaches almost 13.35 cm. Each bar is fixed with latches on the sides. Due to the length, the number of contacts increases. This is what DIMM memory labeling means.
SoDIMM form factor is a little different. Firstly, size - this format is designed to work on laptops or motherboards of miniITX standard. The length of such a strap is 67.6 mm. This size is justified by the fact that laptop computers have limited internal space, and this forces them to make smaller components. This marking of RAM for a laptop, not for a standard computer.
Nevertheless, the difference in size does not affect the specifications at all - just laptops have a less demanding system than desktop computers.
Types of memory
Modern computers use two types of memory - DDR3 and DDR4.
RAM DDR3 has a minimum frequency of 1033 MHz. And its "overclocking" frequency reaches 1600 MHz. This type of memory was first put into operation after 2010. It was from the third generation that it became possible to use RAM as a backup for integrated graphics processors.
In the case of marking the DDR4 RAM, the initial frequencies are 1333 MHz. The “overclocking” potential makes it possible to increase the operating frequency up to 2600 MHz with small timings. Its advantages are not only in higher frequencies, but also in lower power consumption. An increase from 240 to 288 contacts did not affect the size of the bar.
The difference between DDR3 and DDR3L
Using the example of marking DDR3L RAM, it can be noted that it differs from its twin DDR3.
The prefix at the end means Low, that is, low. This is argued by the fact that this type of RAM uses a lower input voltage. Its indicator is 1.35 Volts. On ordinary it is 1.5 V. This parameter allows you to reduce power consumption by 10%. With standard third-generation RAM, they look exactly the same.
Compatibility
The first experience of the symbiosis of two generations of RAM was not very successful. We are talking about DDR2 and DDR3, and more precisely - about motherboards, on which both types of slots for RAM were located. However, the use of different types of RAM did not produce results. As a result, the motherboard could recognize only one type of memory.
As for DDR3 and DDR3L, things are a little simpler here. They have some kind of compatibility - motherboards with DDR3 connectors can support working with DDR3L RAM. But backward compatibility is not provided, as motherboards with connectors for DDR3L are designed to work with low voltage.
The differences between the third and fourth generations are obvious - the location of the gap at the point of contact is in another place. Even the module cannot be inserted into the slot.
The advantage of DDR4
This type of RAM is top-end for gaming computers, as it has an "overclocking" profile and high frequencies. Almost all modern motherboards that were released after 2015 support DDR4.
Many manufacturers began to equip memory modules with various software profiles, a cooling system, and even backlight. In modern games, the amount of RAM plays an important role. Therefore, along with the new generation came the increased size of RAM. At the moment, one bar can have a capacity of up to 64 GB. However, the new RAM costs a lot of money - this is the only drawback.
How to install the module in the system unit
Before starting the installation, pay attention to the marking of RAM. An example is presented in the photo below. Now you should find out the parameters of the central processor that are associated with RAM. The fact is that not every processor can reveal the potential of RAM. And not every processor can support an overclocking profile.
Installing one bracket does not take much time. To do this, you need to remove the system unit cover and push the latches on the motherboard. All manipulations with the motherboard are carried out only in a horizontal position so as not to damage the components. Next, the strap is placed in the connector and fixed with latches.
After that, you need to collect everything back and start the computer. Without waiting for the operating system to load, you need to call up the BIOS menu to make sure that the bar is detected and functioning normally.
To work in dual-channel mode, it is better to purchase modules in pairs, as they are tested together, which positively affects collaboration. If the second and subsequent trims are purchased separately, then you should pay attention to their indicators - frequencies and timings.
How to install RAM in a laptop
Installing memory modules in a laptop is slightly different from a similar desktop operation. To do this, you need a screwdriver to unscrew the screws on the back cover of the laptop.
Before starting the installation, it is worth clarifying a few nuances. Firstly, on all laptops you can install no more than two slats (some even have only one slot). Secondly, the installation of two brackets is performed exclusively in pair mode, since modules from different manufacturers cause a conflict. Before work, disconnect the laptop from the network and remove the battery.
Now you need to unscrew the bolts securing the cover, which closes the RAM. If the module is replaced, the old one must be removed. In the case of an increase in volume, you just need to find out if there is a free connector. Please note that most models of modern laptops will have to be completely disassembled to get to the module installation slot.
The installation method resembles the process of installing a cassette in a tape recorder - a similar slot in a laptop. Next, the bar is placed in a free slot and you need to gently press on it until a characteristic click is heard, which means that the module is fixed.
After assembly, you can connect the laptop to the network and start the system. If the operating system is working properly, the laptop recognized the installed RAM.