DIMM Specifications
The RAM expansion slots accept 184-pin DDR SDRAM DIMMs that are 2.5 volt, unbuffered, 8-byte, nonparity, and DDR400-compliant (PC3200) or DDR333-compliant (PC2700).
Important
DDR266 (PC2100) or slower DIMMs do not work in the Power Mac G5 computer.
Important
DIMMs with any of the following features are not supported in the Power Mac G5 computer: registers or buffers, PLLs, ECC, parity, or EDO RAM.