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HDD's vs SSD's: Facts You Should Know

Modern computers have lots of components that run different parts of the computer. Your motherboard, RAM, CPU, GPU, power supply, and even case and fans play a huge role in the quality and speed of your computer. One of the most asked questions we get here at Computer Answers is what's one of the components that will contribute the most to the overall speed and performance of a computer? In the vast majority of cases, the answer to this question is your computer's storage. So let's talk about the basic difference between a conventional spinning hard drive and a modern SSD.

Difference Between SSD and HDD

Before we get into this topic it's important to differentiate between memory and storage. All computers have the two and there are huge differences between them. Memory, usually in the form of RAM or random access memory of what's called volatile storage. In other words, every time you turn of your computer the RAM is wiped. Not that great for storing things but awesome for making apps run faster and multitasking a breeze. Storage, however, is what's known as non-volatile storage. That means when power gets disconnected your data remains on the drive. Much better for long-term storage, launching applications, and booting into the operating system.

In simple terms, a conventional hard drive is a bunch of spinning disks called platters being read by magnetic heads that read the data and output it onto the screen. This form of storage is great for storing large amounts of data inexpensively, and with the advent of SATA connections and high-performance drives such as 7200RPM drives with over 50MB of cache conventional spinning hard drives have come a long way from what they once were. However, when it comes to the king of speed and reliability SSD's shine the brightest in this category.

SSD Vs HDD: What Are They & How They Work?

Before we jump into the difference between SSD and HDD, let us discuss the basics about them.

A Solid-State Drive (SSD) is a storage device that stores data in flash memory rather than a magnetic-based system such as a hard disk drive.

SSDs employ flash memory - parallel to RAM on your computer. But unlike RAM, which loses data if the power goes off, the material on SSDs is preserved. In addition, SSDs rely on semiconductor chips to deliver and receive data. The data is stored on these chips, which are separated into pages. One advantage of an SSD should be apparent right away. They may run at speeds exceeding those of a standard HDD because they have no moving parts.

A Hard Disk Drive (HDD) is a non-volatile, hardware data storage device coupled to a computer or server. It is also known as a Fixed Disk Drive (FDD).

HDDs store information on platters, a collection of rotating magnetic disks. They have read-write heads on their actuator arm. The arm positions the read/write heads on the drive to write or read data in the correct location. It will take some time to extract info since the heads must align with the disk region to read/write data, and the disk is constantly moving. To load a document or start a software, the HDD may need to read from many regions, which means it may need to pause for the disk to spin into the right place several times before completing the instruction. 

SSD vs HDD - Which One is Useful for Laptop?

SSD VS HDD is one of the most frequently asked questions on the internet. SSD or HDD, which one should you use on your laptop? Here are a few reasons why we believe an SSD is preferable for laptops.

A solid-state drive can read and write data much quicker than a hard drive since it has no rotating components. The significant difference is most evident when you load up your computer or run an application.

Solid-state SSDs also use less energy, which means they last better on a single charge. While some lower-cost laptops still have traditional hard drives (as a means for manufacturers to save money), most mid-range to high-end computers have SSDs.

Furthermore, unlike hard disks, solid-state drives are shock-resistant. If you hit your laptop, the read/write head of a hard drive will most certainly shift, potentially resulting in data damage. SSDs don't have this problem.

You'll profit from an SSD laptop if you plan on carrying a computer with you wherever you go. This is because solid-state devices are much lighter than traditional hard disks. As a result of this advancement, manufacturers can now create ultra-thin tablets, laptops, and other mobile devices.

Speed Difference Between SSD & HDD

SSD’s performance creates the actual difference between SSD and HDD. SSDs beat HDDs in every way since they tend to focus on electrical circuitry instead of mechanical components.. As a result, apps launch faster and there are fewer delays when conducting expensive computer processes.

However, the speed differential is more pronounced when executing read or write operations.

The speed gap between an SSD and a hard drive is most noticeable when copying and moving extensive data. For example, the copying operation on HDDs takes 30-150 MB per second (MB/s), whereas the identical action on regular SSDs takes roughly 500 MB/s or even 3,000-3,500 MB/s on modern NVME SSDs.

When you start an application or go online, you're frequently accessing thousands of smaller files that are contained in small blocks of data, sized at 4K. The quicker your disk can read and write these 4K blocks, the faster and sharper your computer will perform. The speed of HDDs varies from 0.1 to 1.7 MB/s. In 4K reads/writes, SSDs and NVME SSDs, on the other hand, operate at substantially quicker speeds of 50-250 MB/s.

These reason and more are why we at Computer Answers recommend that you purchase an SSD next time you notice your laptop is running slow, your computer takes a fall, or your just trying to upgrade. An SSD is a great addition to any machine and will be sure to prolong the life as well as increase speed and the overall quality of use. We're happy to help you learn more about our products and services and we thank you for your patronage.  


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