Specifications

Memory Power Macintosh - 2 8
iMac
The original M6709LL/A iMac
comes standard with 32 MB of
SDRAM, expandable to 128 MB.
The /B iMac, the 266 MHz, and the
333 MHz models come standard
with 32 MB of SDRAM, expandable
up to 256 MB.
The microprocessor board has two
RAM expansion slots that
accommodate standard SO-DIMMS.
The expansion slot on the underside
of the board is normally occupied by
the factory-installed SO-DIMM.
The top slot is available for a user-
installed SO-DIMM.
Microprocessor
Board
SO-DIMM
RAM
Card Slot
Note: SDRAM DIMMs can be installed one at
time and in any slot as there are no
interleaving benefits. If you’re using 128 MB
SO-DIMMS, make sure they have been
qualified for use in the iMac.
Important: RAM expansion SO-DIMMs for the
iMac must use SDRAM devices. If the user
installs a SO-DIMM that uses EDO or SGRAM
devices, the computer will beep several times
when the user attampts to restart the
computer.
DRAM Configurations
3 2 M B The iMac logic boards come
standard with 32 MB of SDRAM
(one 32 MB SO-DIMM).
Up to
256 MB
M6709LL/A: expandable to
128 MB (use two 64 MB SO-
DIMMs)
M6709LL/B, 266 and 333
MHz iMacs: expandable to
256 MB (use two 128 MB
SO-DIMMs)
Video Memory Note: The M6709LL/A iMac
comes standard with 2 MB of SGRAM video
memory, upgradeable to 6 MB of video. The
/B, the 266 MHz, and the 333MHz iMacs
come standard with 6 MB of SGRAM; 2 MB
on board and a 4 MB module installed in the
video memory slot.
Memory Information
SDRAM Speed 10 ns
DIMM Type 144-pin
Soldered SDRAM None
Number of DIMM Slots 2
Supported Sizes in MB 32, 64
Maximum SDRAM 128 MB
Virtual Memory 1 GB
Soldered Video
Memory
2 MB SGRAM
Number of Video
Memory Slots
1
Cache DIMM Slot No