Apple twentieth anniversary mac Manual Do Serviço
DRAM configurations
You can increase your computer’s DRAM up to 128 MB. The main logic board has two DIMM slots
where you can install DIMMs that meet these specifications:
where you can install DIMMs that meet these specifications:
m 8, 16, 32, or 64 MB (32 MB of DRAM is already installed in either a single 32 MB DIMM or two
16 MB DIMMs)
m 64-bit wide, 168-pin
m 60-nanosecond (ns) RAM access time or faster (If you install DIMMs with different speeds, they will
all operate at the speed of the slowest DIMM installed.)
m 2K refresh rate
m extended data output (EDO) or fast-paged mode (if a fast-paged mode DIMM is mixed with another
type, the combined memory may not operate at fast-paged mode timing)
Important
The Single Inline Memory Modules (SIMMs) from older Macintosh computers are not
compatible with your computer and should not be used. DIMMs that require a 4K refresh rate should
not be used.
not be used.
To increase DRAM to the maximum of 128 MB, take out the two 16 MB DIMMs or single 32 MB DIMM
that came with the computer, and install two 64 MB DIMMs.
that came with the computer, and install two 64 MB DIMMs.
VRAM configurations
Your computer comes with 2 MB of VRAM already installed.
Cache configurations
Your computer comes with a 50-megahertz (MHz) High Performance Module (256K level 2 cache)
already installed.
already installed.
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