PATHHardware Documentation > Power Mac G4 Developer Note


Main Memory Bus

The main memory bus is a 100-MHz, 64-bit bus connecting the main memory to the Uni-N IC.

Main memory is provided by up to four PC100 DIMMs. Supported DIMM sizes are 16, 32, 64, 128, 256, and 512 MB. Four 512-MB DIMMs make a total of 2 GB, which is the maximum supported memory size.

For more information, see RAM Expansion.

Note

At present, Mac OS 9 supports up to 1.5 GB of memory, with a 999 MB maximum for each application. Future releases of the Mac OS will support the full 2 GB.


© 1999-2000 Apple Computer, Inc. – (Last Updated 04 Feb 00)