What is SSD? Everything you Need to Know about SSD

Aamir Khan

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Have you ever heard about SSD and don’t know much about it? Then today, we will talk thoroughly about it and will discuss everything about it. Solid state drive is also like HDDs, which have the same function as to, HDDs like permanent storing data, reading, and writing data, but it is swifter than HDDs and works more smoothly.

How SSD differs from HDD(SSD vs HDD), and which is best, and how to choose the best SSD for your system.

In this article, we will thoroughly guide you to understand what SSD is, how it works, and what types of SSD are available in the market.

History of Solid State Drive

entirelyFirstly the usage and development of SSD started in the 1950s. You will be a little bit shocked to know that it’s old. Yes, it’s old, but you use it now and are still not entirely familiar with it. At first, it was used in first-generation computers.

SanDisk released the first commercial flash-based SSD in 1991. It was a 20 MB SSD in a PCMCIA(Personal Computer Memory Card International Association) configuration, sold OEM(original equipment manufacturer) for around $1,000, and was used by IBM in a ThinkPad laptop. In 1998, SanDisk introduced SSDs in 2.5-inch and 3.5-inch form factors with PATA interfaces.

At first, the prices of SSD were out of reach of the commoner, and in those times, big companies used them for their computer systems. But with time, it evolved to be bigger and cheaper than the first time.

How SSD Works

If we see, the SSD is almost similar to RAM, becasue both have the same memory chips, but they store data or files on NAND flash grids, unlike the RAM, which can store data anywhere between 256KB to 4MB. It gives instant access because of its exact route to the destination.

To hold an electrical charge and prevent volatility, designers use Floating Gate Transistors (FGRs) in the devices.

What is ssd and how it how it works or store data.

There are three main types of memory in SSD which are Single Level Cell (SLC), Multi Level Cell (MLC), and Triple Level Cell (TLC). SLC is the fastest and the most durable, are the most expensive form of SSD. MLC is slower in the write speed, beacuse the TLC can hold 3 bits of data in the cell.

Price of ssd with it's types

Types of Solid State Drives (SSD)

SSD is classified into different types based on their shape and internal structure. Given are a few types of SSD.

  • PCIe
  • M.2 SSD
  • NVMe

We will thoroughly discuss each type here.


The shape of SATA III is similar to HDD because we can connect this with the same connecting cable used for HDD. This is a smaller drive and bare circuit. People use it for low-storage devices like notebooks and laptops.

PCI Express

Peripheral Component Interconnect Express can be directly connected to the motherboard. As it connects directly to the motherboard,so it can provides a way for direct data flow and increases the write speed up to 1GB/s. As the interface, the SSDs use the PCI-E slot, which of the motherboard limits the speed of the PCI-E slot.


These are similar to mSATA and also have bare circuits on them. It also has direct contact with the motherboard and increases the speed. M.2 is present in various types depending on its size and length. It is used for mobile solutions like tablets and notebooks.


NVMe (Non-Volatile Memory Express)

The versatile PCIe connection is easy to upgrade and usually very fast. NVMe uses a high-speed interface to enable faster access to data.

Usage of Solid State Drive (SSD)

criticalInitially, when SSD was developed, it was used in high-speed computers and consumer devices, but with time, there are many fields where the SSD is the most critical factor in performance, speed, and power. Some are given below.

  • Business – Big companies that rely on data transfer and speed use SSD to speed up their work. Because SSD can increase of a system to 10x
  • Gaming – For gaming, the data access rate is higher so that there is no interruption during the gaming or any lagging of your system. You can access this by using SSD in your system.
  • Smartphones – As there is much development in the field of smartphones, there is also a need for high speed as an essential part accessed using SSD.
  • Servers – If you are using the hosting plan, you should need high-speed hosting, and it is definitely due to using SSD in servers due to its high read and write speed.
  • Smart Wearable & Gadgets – The very little space, low power, and high speed and performance in smart and little gadgets are due to SSD.

There are also many differences between SSD and HDD, and you should also know where to use which one. SSD is best for performance and speed, and for low-budget and high-data storage, HDD is best for you.

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