PowerBook

PowerBook

G3 Processor

pg3s

233/266/300 MHz G3
PC100 SODIMM
Max RAM 512MB

pismo_front

233/266/300 MHz G3 (Bronze keyboard)
PC66 SODIMM
Max RAM 512MB

400/500 MHz G3 (FireWire)
PC100 SODIMM
Max RAM 1 GB

G4 Processor

400/500 MHz G4 (Titanium)
PC100 SODIMM
Max RAM 1 GB

550/667 MHz G4 (Gigabit Ethernet)
PC133 SODIMM
Max RAM 1 GB

667/800MHz G4 (DVI)
PC133 SODIMM
Max RAM 1 GB

867MHz/1.0 GHz G4
PC133 SODIMM
Max RAM 1 GB

pg4_12

867MHz G4 (12" Aluminum)
PC2100 DDR SODIMM
Max RAM 1.15 GB

pg4_17

1 GHz G4 (17" Aluminum)
PC2700 DDR SODIMM
Max RAM 2 GB

pg4_12

1.0 GHz G4 (12" DVI)
PC2100 DDR SODIMM
Max RAM 1.25 GB

pg4_15_800

1.0/1.25 GHz G4 (15" FW800)
PC2700 DDR SODIMM
Max RAM 2 GB

1.33/1.5 GHz G4 (12/15/17")
PC2700 DDR SODIMM
Max RAM 2 GB

1.5/1.67 GHz G4 (15/17")
PC2700 DDR SODIMM
Max RAM 2 GB

1.67 GHz G4 (15/17" Double Layer SuperDrive)
PC2-4200 DDR SODIMM
Max RAM 2 GB

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RAM Notes:

The PowerBook G3 uses PC100 SODIMMs. The PowerBook G3 with a FireWire port had an increase of the max RAM to 1 GB.

The PowerBook G4 Titanium started with the same PC100 SODIMM's as the PowerBook G3. Then after the very first G4, they switched to PC133 SODIMM's. The max RAM remains at 1GB.

The PowerBook G4 with the aluminum casing was the first PowerBook to user DDR RAM. They are backwards compatible, but the different RAM speeds are noted in the specs. The very last PowerBook G4 revision with the double-layer superdrive used DDR2 RAM instead of DDR. Again, the max RAM stayed the same. The G4 chipset for the PowerBook series wasn't able to see more than 2 GB of RAM. This is a limitation of the chipsets.