Specifications

Memory Power Macintosh - 2 4
Twentieth
Anniversary
Macintosh
The Twentieth Anniversary
Macintosh logic boards do not
have any soldered DRAM. At
least one DRAM DIMM must
be installed for the computer
to operate.
You can expand the memory to
a total of 128 MB using
5-volt, 64-bit-wide, 168-
pin fast-paged mode or EDO
DIMMs.
PCI
Adapter
Card
Slot
Commun-
ications
Adapter
Card Slot
Battery
Processor
with
Heatsink
Cuda
Reset
Button
Video-In
Slot
DRAM
DIMM
Slots (2)
L2 Cache Slot
Twentieth Anniversary Logic Board
Sound InterConnect
Memory Information
DRAM Speed 60 ns
DIMM Type 168-pin
Soldered DRAM None
Number of DIMM Slots 2
Supported Sizes in MB 4, 8, 16, 32, 64
Maximum DRAM 128 MB
Virtual Memory 1 GB
Soldered VRAM 2 MB SGRAM
Number of VRAM Slots 1 already filled
Cache DIMM Slot 1 already filled
with 256K
Note: The Single In-Line Memory Modules
(SIMMs) used in previous Macintosh models
are NOT compatible with the Twentieth
Anniversary Macintosh. This computer
supports +5V DIMMs only.
Note: Supported memory configurations
include 16, 20, 24, 32, 36, 40, 48, 64,
80, 96, and 128 MB.
Note: This computer requires 64-bit wide,
5-volt, 2K refresh rate EDO or fast-page
mode DIMMs. This computer cannot use 3.3-
volt and 4K refresh rate DIMMs.
DRAM Configurations
3 2 M B The Twentieth Anniversary
Macintosh logic boards have 32
MB of installed DRAM (one 32
MB DIMM).
Up to
128 MB
Use 4, 8, 16, 32, or 64 MB
168-pin DIMMs.