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Hardware The Secrets of PC Memory: Part 1

Discussion in 'Article Discussion' started by Guest-16, 15 Nov 2007.

  1. Guest-16

    Guest-16 Guest

  2. Johnny Bravo

    Johnny Bravo New Member

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    Ryan you should be very proud of what you have written thus far. As all the making s of a great set of articles on computer memory. I Eagerly await your next installment ;)
     
  3. 1e8o

    1e8o New Member

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    Wow...really interesting. Gonna read it when i get back home. Dont think they like it if i gonna read it at school :)
     
  4. LeMaltor

    LeMaltor >^_^

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    Why, cos you might actually learn something? :p
     
  5. ryanjleng

    ryanjleng ...

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    It was a lot of work deconstructing and simplifying engineering concepts to casual read.

    More interesting stuff are coming. :lol:
     
  6. Shielder

    Shielder Live long & prosper!

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    Just nitpicking, but the definitions of Mega, Giga etc are incorrect.

    The english definition of a Gigabit, is one thousand million and a terabit is one billion i.e. a million million. I take it that the author uses US English rather than British English...

    Andy

    /nitpicking

    Good article though.
     
  7. C-Sniper

    C-Sniper Stop Trolling this space Ądmins!

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    Another Great article. Very informational.
    Keep them coming!
     
  8. The_Pope

    The_Pope Geoff Richards Super Moderator

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    You're correct in your definition but isn't that exactly what the green table on Page 1 shows anyway? I'm confused
     
  9. hitman012

    hitman012 Active Member

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    Good article. Although on page 5, all of the diagrams say "MEMROY CONTROLLER" :duh:
    The US definition of a billion (10{param}) is the SI standard for tera-. Does anyone actually use the British definition any more?
     
  10. d4rk*mod

    d4rk*mod New Member

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    Well, I've read all of this.....And, I like it.....You got a good way to explaining thing.....Your analogy to things is also make it really easy to understand.

    I am @ a Information System course now, but I really love to learn about the Computer Organizing things....:D.

    This most recently update I believe, bring me more into this, rather than learning bout the x86, some motorola legacy procs.., and a out-dated memory hierarchy (SSD wasn't listed^^). And even a DDR is just a scratch....:D.

    Now I understand more about dual channel, quad, what's called miss-cached, and etc...

    Thx Ryan^^.
     
  11. Ramble

    Ramble Ginger Nut

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    Tera uses the short scale and always has. Anyone still using long scale notation is an old decrepit man.
    Plus, you have the oddity of flash and ddr memory systems using 2{param} binary system (kibibyte) and other media like CDs and harddrives using the 10{param} decimal system (kilobyte).
    Interesting stuff, but I'd hope most of the OCers here know this already.
     
  12. E.E.L. Ambiense

    E.E.L. Ambiense Acrylic Heretic

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    Awesome! Thanks for this. I love high-fiber reading materials :D!
     
  13. completemadness

    completemadness New Member

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    Im sorry, what!?!?

    Most of that is lost due to the definition of a byte on a HDD vs the operating system
    The percentage that is lost to the system level information is a much much much smaller percentage (that percentage varies alot depending what settings you format with though, and what filesystem you use) - also, that is mainly the partition table as the MBR is 512kb ....
     
  14. ryanjleng

    ryanjleng ...

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    Yes. you are very sharp on that and right about the HDD part.

    The original paper was over 250 pages with huge amount of engineering details. We spent months de-constructing and simplifying ideas down for casual readers. I avoided the 1024 vs 1000 argument and explanation.

    The above HDD statement was more of an analogy focused on the myth that full MHz was solely used to carry application data. Hence, the word "It is a bit like..."

    The objective was to capture a more identifiable situation from perspective of non-initiated computer users, to help explain how all the memory subsystem works.

    It always comes down to who do we write for - the engineering community or non-initiated readers. It is a hard balance to find.

    We appreciate your thoughts and sharpness on picking that up.

    Salute to the geeks!
     
  15. ryanjleng

    ryanjleng ...

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    I understand the confusion.... blame it on the long and short scaling....

    A decision was made to use what general consumers understood, which is in terms of $$$. We didn't want to dive into it as it is purely academic.

    more info here.

    http://en.wikipedia.org/wiki/SI_prefix
    http://en.wikipedia.org/wiki/Long_and_short_scales
     
  16. qupada

    qupada New Member

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    Since nit-picking is so fun, I'll throw my hat into the ring

    Kilo, 10^3, 1000, etc is 'k' not 'K'.


    Also with that analogy to cars and roads at the bottom of page 1 you're dangerously close to a "series of tubes" comment. :)
     
  17. [USRF]Obiwan

    [USRF]Obiwan New Member

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    Awesome article Ryan. Waiting for part 2 :)
     
  18. Shielder

    Shielder Live long & prosper!

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    I wouldn't have thought 33 was decrepit! ;)

    Having reread the article, I found it really interesting. I'm being lazy, but is the full article anywhere to be found (for free)?
     
  19. Guest-16

    Guest-16 Guest

    He's not finished writing it yet :p
     
  20. d4rk*mod

    d4rk*mod New Member

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    Can you perhaps send da full article 2 my e-mail? Pure for education purpose^^. But I suppose I'll keep in touch 1st^^.
     
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