there are two reasons why I know it:
1) I've studied computer sience
2) I'm so old that I know much!

anyway, if you check on any unix/linux stuff made for PC, they have builds for i386 (intel 386) compatible and i586 (pentium compatible).
if you study little processor architecture, 386 has kindof two 286 in it.
same is with 486 against 386.
the last one that has doubled is pentium.
that makes it 586 but it was not allowed anymore to register with number so they came up with the name "pentium"...

well, pentium is 32 bit processor. so is pentium 4

this comes up to:
they are same processor (hence the name) with improvements on every stepping.

how the stepping increases, you should check on o'reilly's page or search with google.

anyway, as we think of, pentium has had uttleast these steps:
original (the one with the problems. 75-90Mzh)
pentium
pentium PRO
pentium MMX
pentium II
pentium III
pentium 4

it's not eight but I'm sure the correct stepping info is there somewhere.
just STFW [Big Grin]
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