i486 and i586 distributives - what is the difference?

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glestwid
Black ninja
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Distribution: Porteus-KDE 3.2.2 i586

i486 and i586 distributives - what is the difference?

Post#1 by glestwid » 07 May 2019, 20:04

Hi,

I see Porteus ISOs separated on i486 and i586 folders. I wonder what the difference is in both options.

donald
Full of knowledge
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i486 and i586 distributives - what is the difference?

Post#2 by donald » 08 May 2019, 03:08

Linux and other operating systems refers to different Intel CPU generations as i386, i486, i586 and i686.
i386 refers to the 80386 processor family,
i486 refers to the 80486 processor family,
i586 refers to Intel Pentium or Pentium MMX processors, and i686 refers to all
Pentium Pro and later processors.

It make it possible to more precisely indicate the minimum set of supported instructions:
i386 , i486 , i586 , i686 , for example,
to distinguish between variants of binary distribution packages

i386 binaries won't have any 486 or later specific optimizations/improvements, and so on.

burdi01
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i486 and i586 distributives - what is the difference?

Post#3 by burdi01 » 08 May 2019, 08:40

To muddle the waters even more "i386" is/was also used by some vendors as generic term for 32-bit.
:D

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