1. 67 mHz
2. The PowerBook has twice the L1 cache and has a 1mb L3 cache that the iBook doesnt.
3. iBook has a 64 bit data path, PB has a 128 bit for cpu and 64 for bus
4. iBook has a max 640 ram, PB 1gb
5. iBook uses pc2100 ddr266 ram, PB uses PC133
6. Powerbook has pcmcia slot, iBook does not
7. iBook has a slightly faster HD speed
8. Old pB can't use airport extreme
9. PowerBook has a line-in - iBook doesn't
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