Which is better SSD or HDD in laptop?

Although the physical specifications of solid-state drives (SSD) and hard disc drives (HDD) are similar, they store data in differing ways.

Each drive has advantages and disadvantages, therefore selecting depends on using your laptop.

Our article will explain the difference between solid-state drives (SSD) and hard disc drives (HDD) as follows:

Difference between SSD and HDD:

What is HDD?

The hard disk technology is well-known and well-proven.

Hard disk has been around 50 years, and their storage capacity continuously growing while their physical size decreases.

For reading and writing data, HDDs utilize rotating discs or platters.

How hard drives work:

  • Hard drives include magnet-sensitive platters with actuator arms and a read/write head on each plate and a motor to rotate and drive the plates.
  • There is a firmware and an I/O controller that instructs the hardware to interact with the rest of the system.
  • Each plate is divided into logical units known as Tracks, which are further divided into logical units known as sectors.
  • A unique address is generated for each track and sector number that can be used to manage and locate data.
  • The data is processed into the nearest accessible field.
  • There is a data processing algorithm that allows the firmware to detect and fix problems before writing it.
  • A pre-determined speed (4200 rpm to 7200 rpm) is used to rotate the plates.
  • The read/write rates are related to these speeds.
  • The faster the hard drive can read and write data, the higher the pre-set speed.

Reading and Writing:

When you request your system to collect or update data, the I/O controller notifies the actuator arm where the data is stored, and the read/write head collects information by detecting the presence or absence of charge at each location.

The read/write head adjusts the charge on the appropriate track and sector if the request was to update data.

Latency is the time taken by the plate and actuator to travel around to find the correct track and sector.

What is SSD (Solid State Drive)?

To boost performance and reliability, SSDs include flash memory.

It’s tough to detect as your hard disc has few moving parts, i.e. magnetic heads, spindles, and spinning platters.

It’s easy for problems to arise, and you risk losing critical information.

SSDs are more durable, operate cooler, and use less energy because they will not have moving parts.

How NAND works:

  • SSDs are similar to huge USB devices that utilize the same basic technology.
  • NAND is a type of flash memory used in solid-state drive technology.
  • Floating gate transistors store data by recording charges at the lowest level.
  • The gates are arranged in a grid pattern and then divided into blocks.
  • Although the blocks vary in size, each square row is referred to as a page.
  • An SSD controller has several functions to keep track of where data is stored.

Reading and writing:

It’s more difficult to update data on SSDs.

Modifying any part of the block necessitates a complete data refresh.

The data from the old block is transferred to a new block, then erased and the data is overwritten with the new block’s changes.

Every time you request to retrieve or update data from your computer, the SSD controller analyses the address of the requested data and reads the charge status.

When the drive is turned off, a process known as garbage collection ensures that the old block information is removed and the block is ready to be rewritten.

Another procedure known as TRIM informs the SSD that when it erases blocks, it can skip rewriting some data.

This is a critical operation that prevents excessive wear on the storage disk as each block can be rewritten a limited number of times.

An algorithm ensures that each block in the drive receives the same number of reading/write operations, which helps to reduce drive wear.

Wear levelling is a process that occurs automatically as the drive operates.

Since the read/write process requires data transfer, SSDs are commonly over-provisioned with storage.

Since the operating system does not display it, a part of the disc is constantly inaccessible to the user.

This gives the driver more flexibility to relocate and remove files without reducing total storage capacity.

Which is better SSD or HDD

SSD Vs HDD – Performance Comparison:

Although both Hard Disk Drives and Solid-State Drives fulfil the same function, i.e., storing your data and allowing you to retrieve it when needed, they each have their own set of advantages and disadvantages.

Considering the advantages and disadvantages will assist you in determining which is the perfect suited for your system based on your needs.

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SSD Vs HDD – Advantages

  1. When compared to a hard disc drive, it consumes less energy.
  2. It’s easily accessible in the market.
  3. The boot time is approximately ten seconds.
  4. For users, a hard disc drive (HDD) is a cost-effective solution.
  5. Data storage does not require fragmentation.
  6. Data recovery is extremely easy.
  7. It makes no sound or vibrations.
  8. The storage capacity of a hard disc drive (HDD) is tremendous.
  9. Disk encryption is supported by SSD.
  10. Disk encryption is supported by HDD.

SSD Vs HDD – Disadvantages

  1. SSDs are not cheap.
  2. Accessing the data takes time.
  3. In SSDs, high-speed transistors generate heat.
  4. It uses more energy to operate than an SSD drive.
  5. SSD are not simply obtainable in the market.
  6. It takes longer to find stuff.
  7. Data recovery from SSDs is time-consuming and costly.
  8. When in use, it makes noises and vibrates.
  9. The maximum storage capacity of an SSD is less than that of a typical HDD drive.
  10. When compared to SSD, file opening and boot time are faster.
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SSD vs HDD – Which is the Best Hard Drive?

Even though SSDs are inexpensive and have been lowering in price, HDDs still have a significant price per gigabyte.

So, if speed and performance are the highest priorities, and the price is secondary, SSDs may be a decent choice and vice versa.

SSDs are considered to be more reliable data storage devices than HDDs.

Since HDDs are susceptible to both physical and logical degradation, data loss is a problem.

SSDs are less susceptible to damage since they have a strong magnetic field that can withstand temperature fluctuations.

Therefore, data loss due to mechanical component failure is not feasible with SSDs.

As a result, Solid State Drives are claimed to be more trustworthy than traditional disk drives.

Several HDD recovery software packages are available in the market to recover your data.

However, if data is lost in an SSD driver, the data recovery process is quite difficult.

Determining whether your SSD is damaged is one of the most difficult tasks you may experience.

Unlike HDDs, it does not emit any signal or symptom.

The way to confirm whether your drive has failed is to completely cease responding.

If your SDD is TRIM enabled, data recovery becomes much more difficult because TRIM allows your computer’s operating system to instruct the drive to wipe off blocks that are no longer needed.

When the blocks are wiped out, fresh data is written in their place and confusing the data recovery task.

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When to Use SSD and HDD?

TIn the following situations, an HDD may be the best choice:

  • It is necessary to have a large storage capacity of up to 6TB.
  • It makes no difference in the system boots up or opens programs.

In the following situations, an SSD may be the best choice:

  • The user is willing to spend a substantial sum for enhanced performance.
  • The user is concerned about the limited storage capacity.
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Frequently Asked Questions:
Is SSD better than HDD?

SSDs are faster, more durable, more compact, quieter, and use less energy than HDDs.

Do I need both SSD and HDD on the laptop?

Yes, having both an SSD and an HDD at the same time is an excellent choice.

Does SSD have a longer lifespan?

According to some estimations, a standard SSD will last for 10 years under moderate workloads.


On your laptop, both SSDs and HDDs are used to store data, however, it is necessary to understand the advantages and disadvantages.

This will assist you in determining to fit your system requirements.

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Hi, I am Meena Patil, the founder of best-laptop.in/, I did my B.E. Computer. This blog provides honest information related to several laptops, laptop equipment, laptop reviews, buyer's guide and much more.

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