Specifications

Memory Power Macintosh - 3 1
Power Mac G4 (PCI Graphics)
The Power Mac G4 logic board provides four
PC-100 DIMM slots.
Compatible DRAM DIMMs must meet all the
following specifications:
• PC-100 Synchronous DRAM (SDRAM)
• 3.3 volt
• 64-bit wide, 168-pin module
• Maximum of 16 memory devices on the
DIMM
• Unbuffered; do not use registered or buffered
Synchronous DRAM (SDRAM)
• Maximum height of 2.0 inches.
VOID Warrenty
Seal if Broken
SDRAM DIMM
Slots (4)
Memory Information
SDRAM Speed 100 MHz (8 ns
devices)
DIMM Type 168-pin
Soldered SDRAM None
Number of DIMM Slots 4
Supported Sizes in MB 32, 64, 128
(64 Mbit max.),
128, 256 (128
Mbit max.)
Maximum DRAM 1024MB
Virtual Memory 1 GB
Soldered Video
Memory
None
Number of Video
Memory Slots
None
Cache DIMM Slot None
DIMM Type 168-pin
SDRAM Speed 100 MHz (8 ns
devices)
* Maximum useable memory limited by
system software.
Installation Order
Different size DRAM DIMMS can be installed
in any order in any DIMM slot. They do not
needt to be installed in pairs.
Video Memory Note: The main logic board has
no built-in video RAM nor a slot for video
RAM expansion. The accelerated graphics card
installed in the computer includes 16 MB of
SDRAM video memory and does not support
video RAM expansion.
DRAM Configurations
0 Zero MB of memory is soldered
to the logic board. If all four
DIMM slots are empty, the
machine will not operate.
Up to
1.0*
expandable to 1.0 GB (four 256
MB DIMMs)