Apple Macintosh eMac G4 machines took two different types of RAM – PC133 SDRAM and DDR-333 (PC2700 or PC3200 can be used.) In both models, the RAM is accessed through a trap door on the bottom of the machine. If the optional tilt and swivel stand is installed, it must be removed, which requires a hex key.
| Model/ Identifier | CPU/ Speed/ Screen/ Date/ Designation | RAM Type & Speed | Maximum RAM | Hard Drive |
| eMac (PowerPC)PowerMac4,4 | PC133 DIMM | 1 GB (2x512MB) | 3.5″ PATA HD | |
| eMac (PowerPC)PowerMac4,4 | PC133 DIMM | 1 GB (2x512MB) | 3.5″ PATA HD | |
| eMac (PowerPC)PowerMac4,4 | PC133 DIMM | 1 GB (2x512MB) | 3.5″ PATA HD | |
| eMac (PowerPC)PowerMac4,4 | G4 1 GHz (ATI Graphics Mid 2003 M8950LL/A) | PC133 DIMM | 1 GB (2x512MB) | 3.5″ PATA HD |
| eMac (PowerPC)PowerMac6,4 | DDR333 DIMM | 2 GB (2x1GB) | 3.5″ PATA HD | |
| eMac (PowerPC)PowerMac6,4 | DDR333 DIMM | 2 GB (2x1GB) | 3.5″ PATA HD |