What's the difference between an SSD and an HDD?

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  • 9 years ago
    Favorite Answer

    SSD - Solid State Disk

    > No moving parts

    > Stored charges in an integrated circuit (conceptually similar to RAM, but technologically different) act as the memory

    > Fast read/write as no moving parts

    > Expensive (in today's market)

    > Lower storage capacity as compared to HDD

    http://en.wikipedia.org/wiki/Solid-state_drive

    HDD - Hard Disk Drive

    > Moving parts

    > Metal platters with magnetic charges acts as the memory

    > Slow read/write compared to SSD

    > Less expensive

    > Higher storage capacity

    http://en.wikipedia.org/wiki/Hard_disk_drive

  • A solid-state drive, also known as solid-state storage or SSD, uses high-performance flash memory to store data. Because there's only motion at the molecular level, SSDs are very fast when it comes to reading and writing data. SSDs are very expensive for storage usage when compared to HDDs, however, due to the fact that SSDs are still a newer technology. Costs have come down significantly over the last year, however.

    A hard disk drive, also known as rotational media storage or HDD, uses rigid platters coated with magnetic material to store the data. A set of floating heads (1 or 2 per disk, depending on capacity of the drive) reads and writes data to the disk. Because of the motion of the disk platters and heads, HDDs aren't nearly as fast as SSDs. However, the strength of HDDs is the cost of massive amounts of storage being far less than SSDs.

    So in short - SSDs are fast with smaller amounts of storage for the money, while HDDs are slower with larger amounts of storage for the money.

  • 9 years ago

    A Solid State Drive/SSD is much more faster than a hard Disk Drive/HDD because the operation on a HDD is mechanical (Rotation of Disks). An SSD is now very expensive and I suggest you now buy a 7200 RPM HDD. Over time I guess the prices would come down

  • Anonymous
    9 years ago

    HDD has moving parts (Hard Disk) which make reading/writing speeds a lot slower, this technology is old so HDD drives are cheap per GB. SSD drives have no moving parts, they're like a big version of a Flash Drive. This is newer technology so it's very expensive per GB, only get this if you prefer speed over storage.

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  • AJ
    Lv 7
    9 years ago

    The big thing is that SSD is much faster reading data where when you want to write data, a standard HDD is better. So if you are doing alot of writing to the hard drives, a HDD, is better.

    I like to use a SSD for just the OS.

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