what kind of memory to buy

Go to www.crucial.com. The website will tell you what RAM fits your computer. Not only that, but all of their RAM is very reasonable in price and comes with a lifetime warranty and a compatibility guarantee. I have ordered from them and they are extremely fast at shipping - I ordered on a Tuesday and had it that Friday!

Hope this helps.

Best wishes,
JOD8FY

 

You don't have to "balance" RAM in a Powerbook 256 + 1 Gb is fine.

The problem with specifications is that the specs that count for Mac compatibility (SPD settings) are never published -- so you have no way to eyeball a spec and decide whether it will be compatible or not. Some PC generic RAM is, and some isn't.

The Powerbook has 2 memory sockets (PC2700). The iBook has 256 soldered-on and one socket (PC2100)

Your best bet is to choose RAM from a reputable vendor who tests and guarantees compatibility with your model of Mac, and offers a lifetime warranty and a no-cost return if it doesn't work.

Crucial makes good memory if you choose their Apple part numbers. The reason that they have separate Apple numbers is that some of their PC SODIMMs are not compatible. Crucial tends to be a bit higher in price.

In the USA I like Data Memory Systems http://www.datamem.com/apple-memory.asp

Thanks
Trevor
CanadaRAM.com

 

canadaRAM suggested to me that I get my memory from datamem.com, and it worked out great. I bought a 1 gig stick for my iMac, and it is trucking along perfectly. I got it for a great price, and it got here 2 days before they estimated. I recommend them as well.

 

Currently Crucial has a better price on the 1Gig ram
than Datamem
$136 at Crucial
$149 at Datamem

But Datamem's price on the 512mb is better than Crucial.

 

Where do you get that Crucial price?
http://www.crucial.com/store/listparts.asp?model=iBook+(G4+1GHz)&tabid=AM
iBook G4
CT368655 US $148.47

http://www.crucial.com/store/listparts.asp?model=PowerBook+G4+1.25GHz+(15-inch+Display)&tabid=AM
15" Albook 1.25 GHz
CT368079 US $189.99

Reminder: You can't use the generic Crucial SODIMMs, especially in the 15" 1 GHz and 1.25 GHz, and 17" 1 GHz and 1.33 GHz models -- they are not compatible. You need to choose the model-specific RAM.

 

I've got to say explicitly don't go with cheap "generic" ram for either laptop. I went to get some ram a few weeks ago from a local PC shop - I wanted the Kingston brand sticks they were advertising, but they didn't have any in and so offered me some generic brand instead, at $20 less.

No surprise that my powerbook was unstable to the point of uselessness after installing that. I took it back and got them to order in some Kingston sticks which have been working perfectly ever since.

It's really not worth the trouble to get a marginally cheaper ram and pay the price in hassle to swap it out, take it back, etc.

 

I've never had good luck with cheap RAM, personally.

I always buy from Crucial. Not always the cheapest, but 20 to 30 sticks later, I have had only one go bad.

Service is quick and efficient, too.