The early MacMini's all took PC133 DIMMs. It wasn't
until the USB 2.0 version that DDR came into play. The last
2 revisions of the eMac took DDR RAM. The very last rev had
an increase in the maximum RAM from 1 GB to 2GB.
eMac
G4 Processor
700/800 MHz G4 PC133 RAM
Max RAM 1GB
800 MHz/1.0 GHzG4(ATI
Graphics) PC133 RAM
Max RAM 1GB
1.0/1.25 GHz G4(USB 2.0) PC2700 DDR RAM
Max RAM 1GB