smilinggoat said:
that's good to know...but what does that mean? Is it worth an extra $200? (200 because it turns out airport cards aren't included with the 1ghz, so i'd have to pay another 100 bringing it up to $1200 for the 1ghz vs. $1400 for the 1.33ghz)
So it looks like you're faced with a $200 difference all up (assuming you want to add AirPort to the 1GHz model). For that $200, the differences between the 1GHz (Rev B) model and the 1.33GHz (Rev C) model are:
- 60GB hard drive standard in Rev C; only 40GB in Rev B model
- 167MHz FSB in Rev C; 133MHz FSB in Rev B.
- DDR333 SDRAM in Rev C; DDR266 SDRAM in Rev B.
- 64MB video RAM in Rev C; 32MB VRAM in Rev B.
- Rev C seems to have a new screen, which is brighter than that in Rev B (in my experience)
- Rev C battery life seems to have improved slighty (about 20-30 minutes) over Rev B battery life (in my experience).
Apart from the quite large increase in CPU core and bus speed, the extra 20GB hard drive space and the extra 32MB of video RAM are probably the two biggest advantages of the Rev C 12" over the Rev B. If you ever do any amount of work with an external display plugged in, that extra 32MB of VRAM is probably going to come in handy. A 50% larger hard drive never goes astray either...Mac OS X and iLife '04 will use up a decent chunk of your hard drive before you even pull your machine out of the box. I have owned both machines, and I agree with the other posters here...there is a noticeable difference in speed between the 2 models. That's not to say that the 1GHz model is a snail, it's just that the 1.33GHz model is noticeably faster

Have you checked
www.barefeats.com and
www.macspeedzone.com to see if there are any benchmarks of the 12" PowerBooks there?
As to whether these extras are worth $200 to you, that's a tough call. We don't know your exact financial situation here, or how important (or unimportant) the extra performance of the 1.33GHz model is to you. Is that $200 going to come from your rent, food, transport or clothing budgets? One other thing to consider is that a newer model PowerBook will hold a better resale value down the track compared to a older model.
If you're stretched for cash and you're considering a 1GHz PowerBook, have you also thought about the 1GHz 12" iBook? Discounting the look of the white plastic iBook versus the aluminium of the PowerBook, a 1GHz iBook could get you most of the things you would get with a 1GHz 12" PowerBook, for less cash. iBooks now officially support up to 1.25GB RAM (same as 12" PowerBooks), and can be made to support display spanning with a simple (unofficial) firmware patch. The speed of a 1GHz 12" iBook and a 12" PowerBook would be comparable. Of course you only get a 30GB hard drive standard, and you can't get a Superdrive in the iBook if you need one, but you have the price savings to make up for that.