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Difference Between HDD(Hard Disk Drive) and SSD(Solid State Disk) 2021


Are you running out of storage space? Has your old hard disk slowed to a crawl? Then it’s time for a hardware upgrade. But should you get a cheaper, traditional hard disk drive or buy a fast SSD? We’ll show you the differences between HDDs and SSDs in terms of speed, capacity, cost, and lifespan – so you can make the right decision.

The main difference between an SSD vs a hard drive is in how data is stored and accessed. A hard disk drive (HDD) is a traditional storage device that uses mechanical platters and a moving read/write head to access data. A solid state drive (SSD) is a newer, faster type of device that stores data on instantly-accessible memory chips.


SSDs in general are more reliable than HDDs, which again is a function of having no moving parts. ... SSDs commonly use less power and result in longer battery life because data access is much faster and the device is idle more often. With their spinning disks, HDDs require more power when they start up than SSDs.