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Thread: SSD or NO SSD.. That is the question

  1. #31
    Tiger Shark
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    This "Write Endurance" is the term for these NAND flash chips in SSD?? I wasn't sure if if was read, write or both.

    (Sorry for the newbie questions)
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  2. #32
    Defiant Shark Johnmcl7's Avatar
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    I've been toying with a new SSD as my current 60GB SSD (bought a couple of years back) has always been irritatingly small but probably going to stick with it as a larger one isn't going to be enough to fit my data on anyway and it forces me to keep data off the OS drive which makes reinstalling a lot quicker.

    John

    Alienware Aurora R4 (i7 3930K), Dell Studio XPS (i7 940), XPS M1330, Studio XPS 1640 (RGB LED 1080p), XPS M1730, Sony UX1XN, TX1HP, Lenovo X200

  3. #33
    Great White Shark
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    Quote Originally Posted by videobruce View Post
    This "Write Endurance" is the term for these NAND flash chips in SSD?? I wasn't sure if if was read, write or both.

    (Sorry for the newbie questions)
    Correct. Write Endurance = number of write/erase cycles the NAND is good for.

    45nm MLC NAND = 10000 w/e cycles per cell
    32nm MLC NAND = 5000 w/e cycles per cell
    2xnm MLC NAND = 3000 w/e cycles per cell

    Seems like a drastic reduction, but even with the modern SSD's using 22nm flash (or 25nm), they are rated (due to spare area, wear leveling, etc.) for well over 5 years of normal use as mentioned by kent1146.

    If you don't want to feel like a newbie anymore check out Anandtech's SSD anthology. It explains all of the basics in a way that is very easy to understand.
    Last edited by James; 05-06-2012 at 08:32 AM.

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