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By Senior Editor John H. Farr
You're going to hear a lot about 7470-based G4s in the next few weeks. For what it's worth, we'll try to set the record straight. Bottom line: it looks like Apple is boosting performance the right way, and for that we should all be thankful. Various rumorial sources readily available Webwise to anyone with half a mouse have posited revamped Power Macs running at more than a gigahertz, maybe as much as 1.5GHz. This is very good, but what is even better is the news -- sorry, the purported, dumpster-diving or anonymous phone tip-derived claims -- that bus speed is due for a nice increase. Bus speed is simply a measurement of quickly data flows around the circuits nside your Mac, to put it crudely, but this is very relevant. If a processor spews out data faster than it can be pumped through your system, the excess will just be tossed away, to put it even more crudely. So the indications that Apple is cranking up performance in ways that count should mean more to Macintosh fans than whatever the gigahertz numbers are. The G4 chips mentioned above support faster memory, too (PC2100 DDR-SDRAM at 266MHz).
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