We apparently have a bunch of comedians in the audience or people who have been around Steves RDF so long its permeated their cellular structure. First off The Centrino isnt the freaking chip. That is the sum package of the Pentium M + Intels WIFI radio + chipset = Centrino. Secondly the Pentium M kicks the living snot out of the G4. Period. Its not up to debate. Go here:
Barefeats G4 Powerbook vs. a bunch of PC laptops Since that time there are no direct comparisons (wonder why.) but you dont have to be a rocket scientist to look at the other benchmarks on the site that compare Powerbook vs. Powerbook. The latest and greatest PowerBooks (1.67Ghz What no 1.678?) you can see next to no benchmark increases. Oops my bad. *pulls out his magnifying glass* Yah there is something there.
Now go and compare benchmarks of that series of Pentium Ms vs. the latest round (Tomshardware.com is a good one.) and simply extrapolate that info and you will see that Intel is kicking the crap out of the G4 on all fronts. And when I say ALL I mean ALL.
-The M currently is being fabed on the 90nm process.
-The M has a much larger cache.
-The Ms chipset supports DDR2 RAM
-PCIe graphics
-SATA hard drives
-a FSB that is at least triple that of the G4s
-The replacement for PCMCIA called ExpressCard
-support for High Definition Audio at 7.1 surround.
I pity anyone who actually thinks the G4 is anything other then an old dilapidated POS. Can it get the job done? Sure. So can a 233Mhz Pentium II. Doesnt mean I would use one at this point though. The G4 is a CPU that should have been discontinued when Apple wisely got the hell away from it on their desktop line. Apple simply had no viable solution for their laptop line so time and again they speed bumped the G4 overclocking the living crap out of it. (Anyone wonder why its 1.67Ghz and not 1.7Ghz?) Prior to the Pentium M the G4 was an outstanding CPU. Intel M has changed the ballgame. Apple should have suited up for it. Instead they have been sitting on the sidelines probably screeching at their chip manufacturers like a baboon who lost their banana that they want a mobile chip solution NOW. NOW NOW NOW NOW NOW! Moto had plans IBM had. Well god know what IBM told Apple. But it apparently wasnt enough.
Pentium M PowerBooks are going to make the current gen PowerBooks look "sad". Its as simple as that.