On Wednesday, March 24, 2004, at 03:54 pm, G-Books wrote:
Subject: Re: Compare Apple to Orange (err.. I mean Pentium)
A long time ago, a P3 had to be almost double the clock speed of a G3 to be equal (in some things). When the P4s came out, they had to be double the speed of a P3 to compete with the P3! Part of that was because the P4s had a longer pipeline to get a higher clock speed, and part was because right after it was released the compilers had not been optimized for the P4. The G4 is faster than the G3 for some things--and with those things its a LOT faster.
So a 1.2Ghz G3 should be 4 times faster than the 600Mhz P3, and for a few things, the G4 will be maybe 10 times faster on some things. But this all depends on cache size, and location and a bunch of other things---like your disk drive. The different G4 laptops have different speeds unrelated to the chip speeds.
If you have a 600MhzG3 it's probably really old, and so everything on the new machine will be a lot better in every way.
You have to hand it to Intel (and AMD, for that matter) - they've overcome all the (theoretical) limitations and handicaps of their original CISC design by a) significant redesign yet somehow maintaining compatibility, and above all b) pushing the cpu speed up to extraordinary levels.
Hopefully IBM will be able to emulate this aspect of Intel's performance with regard to the PPC 970 cpu and its siblings.
Tom Burke
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