Specifications

Power Mac G5 (Late 2004) Troubleshooting - 1
General Information
General Information
DDR Memory
In the Power Mac G5, PC3200/400 DDR-SDRAM DIMMs must be installed in pairs of
equal size and speed. Memory from older Macintosh computers is not compatible. Do not
try to install non-DDR memory as it will not fit in the DIMM slots and could cause damage.
The computers ship with a minimum of 256 MB of RAM, provided by a pair of 128 MB
DIMMs installed in the two DIMM slots marked “1.” You can add DIMMs, provided they are
installed as a pair of equal size, in the two DIMM slots marked “2.” A diagram on the logic
board near the DIMM slots illustrates how the pairs must be installed.