SSD memories are fast and powerful competitors of old hard disks (HDD). But what exactly are the advantages of an SSD memory and why is it becoming more popular day by day?

In the last few years, the supply of SSD memory has increased significantly and their prices have also decreased. Of course, these types of memories are still more expensive than HDD samples. But what is an SSD, and what exactly do you get for paying that much more? We will discuss this topic further.

What is a solid state drive (SSD)?

It may be hard to believe, but solid state drives are actually relatively old technology. SSDs have been around for decades in various forms. The first models were based on RAM and because of the high price, they were only used in high-end computers. In the 90s, the first SSDs based on flash memory appeared, which were still very expensive and were only used for some special tasks. But during the 2000s, the downward trend in the price of flash memory began, and as a result, the price of SSD memory also decreased.

But what exactly is a solid state drive (SSD)? First, we need to look at the nature of the traditional hard disk (HDD). A hard drive is a rotating metal disk with a magnetic layer that holds your data. In hard disks, by rotating the platter, the read and write head accesses the desired data by a mechanical arm. Therefore, a hard disk uses several moving parts.

But an SSD does not have any moving parts. In general, such memories are structurally similar to flash memories rather than being similar to HDD. The vast majority of SSDs on the market are NAND type. These types of memories do not need electricity to store data. This is despite the fact that, for example, the RAM memory in the system loses the stored data in case of power failure. NAND memories offer much faster speeds than traditional hard drives because they no longer have to spend time rotating the head and finding information.


In the SSD memory market with You will come across two main types based on SATA and NVMe. Both models store information in almost the same way, but the way they connect to the computer is completely different, which leads to a significant difference in speed.

SATA-based SSDs use a SATA 3 cable for They use the connection with the computer, the maximum speed of this interface reaches 600 megabytes per second. This cable is also connected to the SATA port of the motherboard. But NVMe-based SSDs connect to the motherboard via a PCIe slot. In the field of these slots, there are different generations, but currently PCIe 4.0 is considered the most common standard, and the maximum reading speed of some PCIe 4.0-based SSD memories reaches 7 GB per second. It should be noted that most SSDs based on NVMe use the M.2 slot to communicate with the computer, but some of them still use PCIe.

Each new generation of PCIe greatly increases the speed of communication, and for example, SSD Based on PCIe 5.0, it can offer speeds of 13, 14 and even 15 gigabytes per second. Considering that Intel's 12th generation processors and AMD's Ryzen 7000 series support PCIe 5.0, the presence of SSDs based on this standard will increase in the coming months. Meanwhile, PCIe 6.0 is supposed to be twice as fast as to the previous generation, and as a result, SSD memories will also benefit from this speed. But these types of memories will go to the market in the best case in 2024.


Let's compare:

Rotation time: SSD memories do not use any moving parts and as a result their head rotation time is zero. But this characteristic is not the same among hard disks, and usually when you want to do something, it takes one or a second to rotate the head.

Delay to access information: memories SSDs are extremely fast and because they don't need moving parts, they can access data almost instantly. But hard disks have less to say in terms of speed and delay due to the need for physical movement.

Noise: SSD memories are completely silent and HDDs have different types in this regard. . Some of them make almost no sound and others make a lot of noise.

Reliability: More hard drives fail. It is usually related to the failure of mechanical parts. Of course, in terms of read and write life, hard drives win the race, and even in the worst case, you can replace key parts inside. On the other hand, SSDs have limited read and write life. But the fact is that the lifespan of these memories is so high that almost no normal user will face any problem after years of use.

Energy consumption: An SSD memory is usually 30-60% It consumes less energy than HDD.

Price: As we said, SSDs are still much more expensive than HDDs. However, over the past few years, SSD prices have come down significantly. The cheapest SSDs are SATA-based, and you'll pay more for NVMe models. Because of this price difference, many users assign an SSD with a capacity of 250 or 500 GB to the main Windows drive and the rest of the drives are placed in the HDD. strong>SSD

In addition to increasing speed and sound reduction, you should pay attention to the following points to take better care of this type of memory:

SSD memory Don't Defrag: Defragmentation process is useless for SSD and even shortens its life. This process is only useful for HDD because it puts the sections related to the files stored in the hard drive together so that the desired head takes less time to access them. But SSD has no moving parts and defragmentation only shortens the life of SSD. By default, Windows has disabled this process for SSD memories.

Keep some of the memory free: Most manufacturers recommend that about 10-20% of the SSD memory keep blank This free space is used to adjust the information stored in the NAND memories and this process reduces the depreciation.

Keep movies and series on another drive: Note Since SSD memories are very expensive, it does not make sense to use them to store files such as movies and series. That's why it's better to keep these large files in a hard disk.

Pay attention to RAM: Compared to the costs of SSD, the price of RAM is not high at all. The higher the RAM capacity, the less pressure is put on the SSD. Therefore, by using larger RAM, you can increase the life of SSD.

Does SSD memory work for me?

Now after reading this detailed article, maybe for you this question Are you looking to increase the boot speed: By using SSD memory, the boot speed of the system is significantly increased. It becomes more.

  • You are looking to increase the speed of running programs and games: One of the most important advantages of SSD is that the loading speed of programs and games increases several times, which results in a better user experience. You will.
  • You don't have a problem with the higher price of these types of memories: SSD memories are ultimately much more expensive than HDDs, so if you don't have a problem with their price, you shouldn't hesitate at all. And it is better to buy a suitable SSD for your system as soon as possible.
  • Fortunately, connecting SSD to computer It is very convenient on a desktop or laptop, and you can do it yourself without the need of an expert.

    • 5 warning signs of SSD memory damage

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