Re : Flash Storage (Drive size)

Discussion in 'Hardware Components and Aftermarket Upgrades' started by iPhantomhives, Jun 24, 2012.

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  1. iPhantomhives

    iPhantomhives Click the image to change your avatar.

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    I was wondering how many gb does a harddrive/ssd actually has after formatting , google search wont help , I don't know what is called. eg 32 , 64 , 128 , 256 , 512 , 1tb but that isn't the actual size , probably 2-3gb less for drive data itself? Can anyone list me the actual capacity?
     
  2. Generic User #2

    Generic User #2 Notebook Deity

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    agility 3 60GB -> 55GB*
    vertex 3 120GB -> 119GB
    crucial m4 256GB -> 238GB

    thats my experience so far...it'll be pretty accurate across all drives.

    *i may or may not have done something wrong to this drive.

    ps,

    60/64GB = same size drive
    120/128GB = same size
    240/256GB = same

    EDIT: the ps section is wrong - apologies :(
     
  3. GTRagnarok

    GTRagnarok Notebook Evangelist

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    To get the "actual" capacity, take the advertised capacity and divide it by 1.024 three times.
     
  4. tijo

    tijo Sacred Blame Super Moderator

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    Consider around 93% of advertised capacity, if you want the exact amount, see post above.
     
  5. Tomy B.

    Tomy B. Notebook Evangelist

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    Not true, 64GB drive actually is bigger then 60GB. ;)
     
  6. masterchef341

    masterchef341 The guy from The Notebook

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    or, you could save yourself some time and divide by 1.074 one time.

    The manufacturers use 1,000,000,000 bytes (10^9 bytes) = 1 GB. Your computer (and the rest of the earth) considers 1,073,741,824 bytes (2^30 bytes) = 1 GB. This is the nature of the discrepancy.

    So:

    60 GB / 1.074 = 55.x GB
    128 GB / 1.074 = 119.x GB
    256 GB / 1.074 = 238.x GB

    ---

    If the manufacturer specifies 60 GB, that's different than the manufacturer specifying 64 GB. The 64 GB drive will have 59.x GB on your computer. Similar case with any size drive. If the drive size is specified in GB, just divide by 1.074. When drive sizes start getting measured in TB, you'll need to divide by 1.1. Hope that helps.
     
  7. yuio

    yuio NBR Assistive Tec. Tec.

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    ^^ hmm I always thought 60/64 were the same due to reserve capacity....

    so is there actually more than 256GB in say an M4? I assume it needs to provision some for reserve... or is advertising at 240GB more 'truthful'
     
  8. tijo

    tijo Sacred Blame Super Moderator

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    The M4 doesn't use overprovisioning. As such, the entirety of the drive's NAND is user accessible. Technically, a 240GB drive has the same total capacity, but that extra 16GB cannot be accessed by the user, only by the controller because of overprovisioning. So from a practical standpoint, the 240GB drive has less usable capacity than the 256GB one.

    A 240GB drive will have a capacity of ~223GB in windows and a 256GB drive will have a capacity of ~238GB.
     
  9. iPhantomhives

    iPhantomhives Click the image to change your avatar.

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    Thanks everyone Rep+ , may i know how about those flash drive/usb/mmc. 2gb 4gb 8gb 16gb etc , / 1.074 too?
     
  10. Generic User #2

    Generic User #2 Notebook Deity

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    son of a ....no wonder the 55GB number looked funny to me. -_-
     
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