The Powerbook G$ is built with the Motorola-based Processor. It has two memory sockets and can be upgraded to 2GBs maximum depending on all model. Memory can be installed one module at a time. Apple recommends that two modules of the same size be installed for maximum performance.

Model Standard Memory Maximum Memory Memory Expansion Memory Sizes Memory Type
A1013 512MB (256MBx2) 2GB Two Slots 256MB | 512MB | 1GB 333MHz PC-2700 DDR
A1052 512MB (256MBx2) 2GB Two Slots 256MB | 512MB | 1GB 333MHz PC-2700 DDR
A1085 512MB (256MBx2) 2GB Two Slots 256MB | 512MB | 1GB 333MHz PC-2700 DDR
A11107 512MB (256MBx2) 2GB Two Slots 256MB | 512MB | 1GB 333MHz PC-2700 DDR
A1139 512MB (256MBx2) 2GB Two Slots 512MB | 1GB 533MHz PC2-4200 DDR2