What is the difference between i386, i486, i586, i686, i786

Ever wondered what are those words i386/i486/i586/i686/i786 that comes after the name of RPM / DEB packages?

When it comes to understanding the compatibility of a package between different architectures, knowing these terms become important. The above coined terms are Processor architectures. Let’s have a look below…

i386     –     Intel i386/80386   (in 1985)          or          AMD386 / AM386 (in 1991)

i486     –     Intel i486/80486   (in 1989)          or          AMD486 / AM486 (in 1993)

i586     –     Intel Pentium         (in 1993)          or          AMD-K5 (in 1996)

i686     –     Intel Pentium Pro (in 1995)          or          AMD-K6 (in 1997)

i786     –     Intel Pentium 4      (in 2000)          or          AMD-K7 (in 1999)

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