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Difference between GB and TB for an HDD?

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[Guillaume] Posted messages 41 Status Member -  
 Walou -
Hello everyone!!!!

So I'm planning to buy a laptop with 120GB of HDD and my question is the following:

Does 120GB correspond to 120GO???
What exactly is the difference?

Thanks in advance to those who can clarify this point for me..
--
Computing: the greatest invention after woman...

13 answers

  1.
    tribun Posted messages 64900 Registration date   Status Member Last intervention   12 686
     
    A GB (gigaByte, in uppercase) is the English translation of a GO (gigaOctet).

    Computers use information in binary form (either a current or not) which we call a bit (from Binary digIT).
    A bit expresses 2 possibilities, so a way had to be found to create combinations. Thus, we invented the byte (in English Byte) which has 8 bits allowing for 256 combinations.
    The problem arises from the notations used.
    We use an uppercase B for Bytes (octets) and a lowercase b for bits.

    Then, there are two competing notations that cause confusion.
    In computing, we prefer to have kilos of 1024 units (2 to the power of 10) whereas the international notation is 1000.

    So we have:
    The Ko (or KB) which is 1000 octets
    The Mo (or MB) which is 1000 Kilo-octets
    The Go (or GB) which is 1000 Méga-octets
    The To (or TB) which is 1000 Giga-octets
    The Po (or PB) which is 1000 Tera-octets (for Peta-octet)

    and we must differentiate them from the following notation:
    The Kio (or KiB) which is 1024 octets
    The Mio (or MiB) which is 1024 Kilo-octets
    The Gio (or GiB) which is 1024 Méga-octets
    The Tio (or TiB) which is 1024 Giga-octets
    The Pio (or PiB) which is 1024 Tera-octets

    So that's why when you buy a hard drive of 80 Go, the computer shows you a slightly lower size.
    291
    1. ptitboudechou
       
      So, GO or GB is the same??
      0
    2. Anonymous user
       
      Yes, the only difference is the language, Go or GO in French and GB in English.

      Beware not to confuse GB and Gb => B = byte and b = bit; there are 8 bits in a byte.

      Bytes are used for storage capacities, file sizes, etc., while bits are mainly used for data rates (like network connection speeds, for example).
      1
    3. Jo
       
      Perfect, here is a clear and effective explanation! Thank youuuu
      1
    4. S4RETH Posted messages 38 Status Member
       
      Clear and complete explanation that even goes beyond the question asked.
      Top-notch!
      0
    5. MARIE
       
      THANK YOU,
      for this very detailed explanation.
      0
  2. sandrapipo
     
    Salut, "1 Go" et "1 GB" désignent la même chose, c'est-à-dire un gigaoctet. "Go" est l'abréviation française de "gigaoctet", tandis que "GB" est l'abréviation anglaise de "gigabyte".
    Merci de ta question !
    251
    1. anonyme
       
      1GB=8Gb (lowercase b)
      1GB=1GB (uppercase B)
      0
  3. sylvain-a
     
    Although the last message didn't come yesterday, I would like to give a response as it might still be useful

    I am in a 3-year vocational high school program in electronics and I have learned therefore,

    First of all, you should not confuse GB and Gb

    GB = Go

    1 GB = 1 Go

    Now,

    1 Go = 8 Gb

    Byte is an English word meaning "octet" in French, with the uppercase B and in fact a lowercase o ...

    There you go, I hope this helps!

    Bye
    41
    1. epango Posted messages 37195 Registration date   Status Member Last intervention   4 270
       
      Hi,

      You’ve understood your lesson well. All that’s left is to apply it.

      See you later

      --
      If you don’t know, you ask, you feel ashamed once.
      If you don’t ask, you will be ashamed your whole life. Chinese proverb.
      0
      1. blux Posted messages 2046 Registration date   Status Moderator Last intervention   3 455 > epango Posted messages 37195 Registration date   Status Member Last intervention  
         
        the message 22 remains valid however...

        --

        See you Blux 
         "The idiots dare everything. It's even how you recognize them"
        0
    2. REMYMARTIN60 Posted messages 2016 Status Member 403
       
      thank you^^
      0
    3. kikou
       
      ok
      0
  4. [Guillaume] Posted messages 41 Status Member 10
     
    OK so if I'm following you, 120GB = 120 GB (GB being the English formulation from what I understood)...

    Finally, if someone could confirm all this for me because I'm not sure...
    --
    Computing: the greatest invention after woman...
    9
  6. le druide Posted messages 40644 Registration date   Status Contributor Last intervention   6 616
     
    Hi,

    you need to search on CCM to find this > binary
    --
    the druid without the potion.
    2
  7. epango Posted messages 37195 Registration date   Status Member Last intervention   Ambassadeur 4 270
     
    Hi,

    I don't see what made belou-6 bring up this discussion again where everything has already been said, especially to write a mistake!

    See you later

    --
    You don't know, you ask, you are ashamed once.
    You don't ask, you will be ashamed all your life. Chinese proverb.
    1
    1. blux Posted messages 2046 Registration date   Status Moderator Last intervention   3 455
       
      Interview by Djerfy for whom a byte is necessarily equal to an octet, therefore 8 bits.

      --

      A+ Blux           
       "Fools will do anything. That's how you recognize them"
      0
      1. epango Posted messages 37195 Registration date   Status Member Last intervention   4 270 > blux Posted messages 2046 Registration date   Status Moderator Last intervention  
         
        Hi,

        We can nitpick about the value of a byte in English. But in French, we agree that 1 byte = 1 octet, which is equal to 8 bits.

        See you later

        --
        If you don't know, you ask, and you'll be ashamed once.
        If you don't ask, you'll be ashamed your whole life. Chinese proverb.
        0
      2. blux Posted messages 2046 Registration date   Status Moderator Last intervention   3 455 > epango Posted messages 37195 Registration date   Status Member Last intervention  
         
        Applicable on machines that code in 8 bits (typically in ascii-8).

        Not applicable elsewhere: network equipment that adds a physical parity bit (byte = 9 bits), large computer systems that still code in BCD (6 bits).

        English and French have nothing to do with it...

        --

        A+ Blux           
         "Fools dare everything. That's how you recognize them"
        0
  8. le druide Posted messages 40644 Registration date   Status Contributor Last intervention   6 616
     
    BYTE: English word for byte,

    1 byte is a set of 8 bits which = 1 octet.

    So result: 120Gb = 120Go
    --
    the druid without the potion.
    -1
    1. epango Posted messages 37195 Registration date   Status Member Last intervention   4 270
       
      Hello,

      "So the result: 120Gb = 120Go"

      But no, there is a difference between B and b: B=byte and b=bit.

      So 120GB=120Go.

      Best regards.

      --

      You don't put down horses, even when they have become too old.
      0
  10. Jujuliette36
     
    so your computer has 120,000,000 bytes
    0
    1. Anonymous user
       
      Hi

      First of all, that's wrong > 120GB = 120,000,000,000 bytes and it's been 3 and a half years since he has the answer to his question...
      0
  13. belou-6
     
    Donc 1 Go est égal à 8 Gb.
    -1
    1. Djerfy
       
      :s:s

      One must not confuse "b and B" as in "bits and bytes"

      1GB = 1GB = 8Gb
      0
    2. Jovy369 Posted messages 2 Registration date   Status Member Last intervention  
       
      No! 1GB is equal to 8Gb...!
      0
    3. blux Posted messages 2046 Registration date   Status Moderator Last intervention   3 455
       
      This is exactly what Djerty said almost six years ago...
      Thank you for not bumping old posts just to add the unnecessary...
      0
  14. punteros Posted messages 10 Status Member
     
    1 byte = 1 byte = 8 digits
    in 1 byte there are 8 digits, thus 8 positions that can have
    the value of 1 or 0 (the current flows or does not flow)
    Ko = kilobyte = 1024 bytes
    Mo = Megabyte
    Go = Gigabyte

    it's always in powers of 2
    1024 being 2 to the power of 32, I believe.

    Pointers
    -2
    1. cijad
       
      eh non, perdu --> 1024=2^10
      0