ibook / powerbook RAM

[pritsey]

Hi all,

I have a 1GHz G4 iBook with 512 RAM and have been thinking of getting rid of the 256 stick I put in when I bought it and upgrading to a 512 stick to give 768 in total.

While looking at the Crucial web site I noticed that the price of PC2100 laptop RAM is morew than the PC2700 stuff for Powerbooks. Weird! The PC2700 512 stick was approx 60 and the PC2100 stuff was over 80.

So, my question is this:

Can I use a stick of PC2700 laptop RAM in my iBook which is designed for PC2100?

I know in my PC this works fine, but not sure about laptops.....

Any ideas?

[Nacrisa]

Going by the manual (1.25GHz iBook G4) at least, the iBook can only take PC2100 DDR 266 or PC2400 DDR 333 Type RAM.
Also, though you can use PC2400 in an iBook, the faster RAM can only go as fast as the PC2100 stuff.
I think there are cheaper places than Crucial to get RAM too...

[Stoo]

Huh?

Of course you can use the pc2700, it'll just run at the same speed as the other stuff, but he still saves £20

BTW, there is no such thing as pc2400 ddr 333...

[Jonny M]

Macs are very fussy about RAM. Logic says it should run at the slower speed, but we aren't talking about logic here.

[Stoo]

Yeah, but that's more to do with the brand and memory timings than the actual speed..

Anyway, if you want to be 100% sure it'll work, buy the stuff the memory configurator mentions, as then it's guaranteed to work.