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http://www.insanely-great.com/news.php?id=1073
IBM's PPC 750FX G3 Now Available at 1GHz
By Remy Davison, Insanely Great Mac
October 8th 2002
750FX powers along at speeds ranging from 600MHz to 1GHz, with low power consumption.
The GHz model may well end up on a future iBook.
Regardless of whether Apple opts to take its iBook to G4, there's still a lot of life
left in the old PPC750 (aka G3).
IBM now offers the PPC750FX chip (148K PDF), the same as that used in the current
iBook, at speeds ranging from 600MHz to 1GHz, with a backside cache of 512K at full
processor speed. Some earlier iterations of the iBook ran a smaller 256K cache on the
PPC750cx (94K PDF) CPU, which also ran at full processor clock speed.
IBM's spec sheet says the 750FX supports a bus speed up to 200MHz (extremely unlikely
for any iBook in the near future). The big advantages the mobile G3s have over the
mobile G4s currently are heat and battery life.
Analysis: Currently running at 700MHz, the 1GHz G3s give Apple the option to run both
the iBook and the original CRT iMacs on the G3 for the foreseeable future. It's
inexpensive to do so and it's probably doubtful whether average users will need or use
the power offered by the G4, unless they're movie making (in which case, they should
buy an eMac or one of the other SuperDrive-equipped models). I've long argued that the
iBook should make the leap to G4, in line with Apple's other consumer offerings, but
this won't happen until the PowerBook G4 can be offered with considerably greater
clock speed and all-around system performance - otherwise, the iBook would cannibalize
its sales to an unacceptable degree. We're sure that when Apple can boost the
PowerBook to a 1GHz G4, it can safely (from a marketing point of view) put 1GHz IBM
G3s into iBooks.
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