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What Does x64 and x86 Mean?

Discussion in 'Site & Server Administration' started by gobbly2100, Jan 26, 2008.

  1. Ann-on-a-moose

    Ann-on-a-moose Peon

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    #41
    This thread is ancient, but I feel this may be a relevant answer to some :) 32 bit OS programs needed to be seemlessly run on a newer and more RAM 64 bit OS. Microsoft uses DLLs to run programs on its OS's. Rather than having massive amounts of programming data using up all the memory for each program they have sections of commonly used programming which run many different programs called Dynamic Link Libraries or DLLs. So several 32 bit programs will use the same 32 bit DLL to run. When the 64 bit OS was developed MS needed it to be backwards compatable with the 32 bit programs in order for them to run on the new OS (since the programs were still in use and the issue was mostly the amount of available RAM (random access memory)). The problem being the new 64 bit programs also needed their own DLLs to run. So to stop the 32 bit DLLs trying to run the 64 bit programs and vice versa, causing critical run errors, they created a file x86 to contain the 64 bit DLLs. This allowed the System to easily match the correct bit DLL to run with the specific bit program. So in conclusion a 32 bit OS x86 (with 32 bit programs) doesn't have x86 files because these folders contain the DLLs required to run 64 bit programs on a 64 bit OS. Whereas a 64 bit OS x64 will contain all 3, 64 bit programs; x86, 64 bit DLLs (separated from 32 bit) and the (still useful) 32 bit programs with the original 32 bit DLLs to run them. Phew! hth ;)
    SEMrush
     
    Ann-on-a-moose, Jul 29, 2017 IP
    mmerlinn and alwaysforGod like this.
  2. alwaysforGod

    alwaysforGod Active Member

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    #42
    Solid answer ^, and yes it can be a bit confusing but remember that (oftentimes) randomly assigned numbers can get sort of wonky when it comes to the actual filing and categorizing of different programs and software, but for this, 32-bit and 64-bit operating systems, 32 being represented by the x86, and round we go, right? Lol, hope everyone is doing well,

    -John Y.
     
    alwaysforGod, Apr 20, 2018 IP
  3. sobuj ali

    sobuj ali Member

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    #43
    its old
     
    sobuj ali, Jun 4, 2018 IP