performance difference?

Well if you got the 15 inch powerbook 1.5 fully loaded then it would eat your imac up and spit it out!!!!

So yeah you would see a huge gap between them both

hope this helps

i sa sell both your windows and imac machines then get the new imac g5 when that comes out....
now that would be a cool setup....

 

I think you will definately notice a boost witha 15" powerbook compared to your imac.

 

you'll see an increase in speed, it won't be a gigantic difference like upgrading to a G5

 

yes he will.... 700 mhz to 1500mhz

no it wont be upgrading to a g5 but it will still be huge

 

moo

I think the 15" powerbook is going to spank all over the 700mhz imac.

my brand new 1.33 12" poopies on my 1ghz imac.

I can even run xp on it. something the imac gags on.

 

That's seriously the best word ever!

 

I've not seen benchmarks for the two machines, but the speed difference will depend on what you use it for. For email, web, etc., the iMac will most likely be a bit slower, but if you do anything else I'd expect the PB to clobber the iMac.

I've got a 1.5 GHz 15" and it is terrific. Noticeably faster than my sons 1 GHz eMac.

Best,

Bob

 

generally the speed difference is significant within the same processor line if the clock speed triples. so going from 700MHz to 1500MHz is not enough to amaze you. it will however be a nice speed boost, but nothing to die for.

is the 700MHz imac too slow for you? if not, you'd do yourself a favor if you waited for the G5:s. now is a wrong time to buy just for buying's sake...

(ppc clock can be roughly doubled in comparison to x68 cpu:s, so that 1.5GHz powerbook would quite much equal your pc in pcu performance. laptops however take architechtural performance hits here and there, so in real world your pc might still remain snappier.)

buy when you absolutely need to.

 

Since you're considering portables, I'd say now is the perfect time to purchase. With the line just updated, you'd have to wait up to another year before they're updated again- and even then there's no promise for a G5.

As has been said before, the 15"PB will be noticably faster then your current iMac.

Of course, if you're even slightly considering upgrading to another iMac- don't.
The iMac line is currently too old and in dire need of updating.... hopefully in the next month or so we'll see that line updated to a G5 chip- and then they'd be worth looking at again.