> > > Pentium 60 MHz -> 200? MHz factor of 3.3
> > P55c (mmx) hit 233MHz, I believe, for almost 4X
>
> Was P55c for notebooks? the first desktop Pentiums were 60 MHz.
P5 was original the 60-66Mhz Pentium w/ a 1x bus multiplier, and 5V I/O(I
think?)
P54 was the Pentium 75-200 MHz, using a 50 or 60 or 66MHz bus with various
core multipliers.
P55C was the Pentium with MMX.
oh, hey, Mobile Pentium w/ MMX (P55 based) hit 300MHz, so we got a factor of
5X (60-300)
all of these had the exact same integer and FPU core, hence they were all
P5.
also, for completeness...
P6 was the Pentium Pro. BTW, just checked, there was a 150MHz P6.
P64 was the Pentium-II
P68(?) was the Pentium-III Katmai.
I'm not sure if there was any such project designation for the current P-III
"Coppermine".
these chips (and various mobile spinnoffs) all used the exact same core for
integer, level 1 cache, execution unit, and FPU. The P2/3 added MMX
support.
-jrp
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