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HDD Vs SDD: Make a Wise Decision

Are you finding it difficult to choose between Solid State Drive (SSD) and Hard Disk Drive (HDD)? Don’t worry; this blog will give you a clear idea about the difference between SSD and HDD and will help you to come to your decision.

The Old Magnetic HDD

Invented in 1950s, the old magnetic hard disk drives (HDD) took excessive space but only held a small amount of data. But these storage devices could save data faster than the older storage methods. Therefore, it had a huge demand. Over the years, the size of magnetic hard drives became smaller and gained larger capacity (around 500GB and 2TB maximum for notebook size drives; 6TB max for desktops). They are less expensive than SSDs. However, they were never the perfect device.

Solid State Drives

Solid State Drives have no mechanical moving parts or spinning disks which ensures larger life span. SSDs are faster at reading & writing data. They require less power draw which in turn conserves energy as well as increases battery life. As SSDs have no moving parts, they make no noise and have longer lifespan. The downside is that Solid State Drives have smaller data capacities than HDDs and are highly expensive.

7 Major Differences between HDD and SSD


According to Intel, SSD is 8 times faster than an HDD. Therefore it offers faster boot up times. Hard Disk Drives use spinning platters of magnetic drives as well as read/write heads for operation. Therefore, the start-up speed of HDDs is slower than SSDs.


As SSDs do not have moving parts, little heat is produced whereas HDD produces more heat than an SDD because of its moving parts as well as higher power draw.

Storage capacity

SSDs are only available in smaller sizes. The storage capacity of SSDs are not more than 1 TB for notebook size drives and maximum 1 TB for desktops while laptops with HDD internal drives are typically around 500GB and 2TB for notebook size drives; 6TB max for desktops. However, with 3D NAND, SSD is going to close the capacity gap with HDD by the end of 2016.

Power Consumption

As SDD requires less power draw, it uses less battery while on the other hand, HDD requires higher power draw than SDD due to its moving parts and therefore it uses more battery.


SSD disks do not have moving parts unlike HDD drives. Therefore SSDs are highly reliable. As HDD has moving parts, it has more chances of mechanical failure. Secondly, HDDs use magnetic storage. Therefore, they are susceptible to data corruption when it comes close to powerful magnets. On the other hand, Solid State Drives don’t have risk for such magnetic distortion.


As SSDs do not have moving parts, they don’t make any noise while operating. In case of HDD, audible clicks as well as spinning can be heard.


SSDs are more expensive per gigabyte than hard drives. A flash SSD is about $0.10 per GB while on the other hand; external hard drives are only around $0.06 per gigabyte.

Basically, if you are concerned about storage capacity and you need storage capacity upto 6 TB, then HDD is a better choice for you. It is also much cheaper than SDD. But if you want to have faster performance and limited storage capacity doesn’t matter to you much, then SSD will be a good choice.

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