More than 2gb ram on powerbook?

Makosuke

macrumors 603
Aug 15, 2001
6,168
354
The Cool Part of CA, USA
No.

The G4 is a 32 bit processor, meaning it can address at most 4GB of RAM. Due to the way the MacOS addresses memory (maybe someone else can explain the details--I'm not that knowledgeable) the actual limit is half that.

Thus, 2GB.
 
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sk3pt1c

macrumors 6502a
Original poster
Nov 29, 2005
914
5
a simulacrum
cool, thanks dude.
well, not so cool actually but i'm glad to know the reason at least. :)
if anyone can get more technical for us on why it's only 2gb, i'd appreciate it.
thanks! :)
 
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yippy

macrumors 68020
Mar 14, 2004
2,087
3
Chicago, IL
Th OS has nothing to do with it. In the PowerBooks the limit is in the motherboard chipset.

PowerMac G4s can address and hold a full 4Gb of ram using the same OS (even Mac OS 9 could handle the whole 4 Gigs).
 
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