Specifications

Memory Guide Early Macintosh - 13
Macintosh IIcx
The IIcx has no soldered
DRAM. You can expand the
memory to a total of 128 MB
by installing DRAM SIMMs.
Memory Information
DRAM Speed 120 ns
SIMM Type 30-pin
Soldered DRAM None
Number of SIMM Slots 8
Supported Sizes in MB 256K, 1, 4, 16
Maximum DRAM 128 MB
Virtual Memory 1 GB (with
MODE32 7.5
installed)
Soldered VRAM None
Number of VRAM Slots None
Note: You must fill an entire bank of four
SIMMs when upgrading memory.
DRAM Configurations
Total
Memory Bank A Bank B
1 MB Four 256K Empty
2 MB Four 256K Four 256K
4 MB Four 1 MB Empty
5 MB Four 1 MB Four 256K
8 MB Four 1 MB Four 1 MB
16 MB Four 4 MB Empty
17 MB Four 4 MB Four 256K
20 MB Four 4 MB Four 1 MB
32 MB Four 4 MB Four 4 MB