ibook g4 ram question

julz · #1 July 17th, 2009, 01:04 PM

I have an older ibook, 933MHz, and want to upgrade ram.. All the sources sy that 640 is the max. I have heard that you can go up to 1.25, but don't know for sure if it would work. this article seems to support that... Any thoughts from the gurus?

http://lowendmac.com/ed/moore/08cwm/...ook-guide.html

Thanks,
Julz

DeltaMac · #2 July 17th, 2009, 01:26 PM

This should be accurate info for your memory upgrade:
Your iBook G4 has just one memory slot.
It can take either a PC-2100 or PC-2700 SO-DIMM, with a maximum capacity of 1GB for one chip. Your iBook G4 has 128 MB of memory that's built-in, so adding 1 GB will give you the total possible of 1.128 GB

julz · #3 July 17th, 2009, 04:41 PM

Thats great news, thanks. I wonder why they say only 640MB.

Julz

ElDiabloConCaca · #4 July 17th, 2009, 05:32 PM

640 is the "Apple-supported" max.

The hardware can support more, though. Kind of like some of the early MacBooks -- Apple claimed they only supported 2GB, though, in reality, they supported more.

Jesse714 · #5 July 17th, 2009, 09:55 PM

What about the ibook G3's?

DeltaMac · #6 July 17th, 2009, 10:27 PM

iBook G3 will support 512MB in the one slot. The max adds to the built-in memory, which could be 32, 64, or 128MB, depending on the model of G3 iBook.

Jesse714 · #7 July 17th, 2009, 10:30 PM

Oh, what would happen if i put a 1 gig stick in? would it just not recognize it?

DeltaMac · #8 July 17th, 2009, 11:33 PM

An iBook G3 can't use a 1GB chip. It may simply not recognize it, or not boot at all.
And, I don't think you can find a 1GB PC133 SO-DIMM chip...
The 1GB that you might see are always 2x512 MB sets.
The G3 is limited to one 512 MB chip max

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