Apple Power Macintosh G3 Instruction Manual download pdf (Page 35)

Working Inside the Computer 35

DRAM Configurations

Your computer’s DRAM can be expanded to a maximum of 1024 MB by adding DIMMs to the

four DRAM DIMM slots on the main logic board.

DIMMs must ﬁt these speciﬁcations:

m “PC-100” Synchronous DRAM (SDRAM)

m 3.3 volt (V)

m 64-bit wide, 168-pin module

m Maximum number of memory devices on DIMM is 16

m Unbuffered; do not use registered or buffered Synchronous DRAM (SDRAM)

m Height must not exceed 2.0 inches

Note: Different size DRAM DIMMs can be installed in any order in any DIMM slot. Unlike

older Macintosh computers, DIMMs need not be installed in pairs.

To increase DRAM to the maximum of 1024 MB, ﬁll all four slots with 256 MB DIMMs. Any

256 MB DIMMs you install must use 128 megabit (Mbit) device technology.

For instructions on installing DRAM, see the section “Installing DRAM” on page 44.

Important This computer uses SDRAM DIMMs. DIMMs from older Macintosh computers

are not compatible with your computer and should not be used even though they ﬁt into the

DRAM DIMM slots.

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Apple Power Macintosh G3 Instruction Manual Page 35