Installing RAM into a PowerMac G4 MDD

[chrisNova777]

DDR Memory
The computer’s logic board includes four memory slots, which accept double-data rate (DDR) SDRAM DIMMs.
Memory can be expanded to a maximum of 2 gigabytes

DIMMs used in this computer must fit these specifications:
• PC2100 SDRAM DDR266 DIMMs for 133 MHz systems
• PC2700 SDRAM DDR333 DIMMs for 167 MHz systems

Important: Make sure that the memory installed on the logic board is compatible
with the system. Refer to the next section, "Results of Mixing PC2100 and PC2700
RAM".

• 128, 256, or 512 MB DIMMs
256 MB DIMMs must have 128 or 256 megabit (Mbit) technology devices; 512 MB
DIMMs must have 256 Mbit devices
• 2.5 volt
• 64-bit wide, 184-pin module
• unbuffered (do not use registered or buffered DRAM)
• maximum height of 1.3 inches

Important: DDR-SDRAM is closely correlated with the computer's system bus speed.
Use PC2100 DDR-SDRAM for 133 MHz system bus computers
and PC2700 DDRSDRAM for 167 MHz system bus computers.

according to OWC RAM may also be PC3200 400Mhz DDR