RAM conÞgurations
The PowerTower Pro has eight slots for memory modules (or DIMMs). The computer will
work with a number of different memory conÞgurations, from a minimum of 16 MB to a
maximum of 1024 MB. Follow these guidelines when conÞguring your systemÕs RAM:
DIMM slots can accept 8, 16, 32, 64, and 128 MB DIMMs.
All DIMMs must be 168-pin, 64-bit fast-paged mode, 70-nanosecond RAM access time
or faster. Slower DIMMs will not work reliably. SIMMs from older Macintosh
computers are not compatible.
DIMMs should be installed in pairs of equal value and in corresponding slots to take
advantage of interleaved memory.
VRAM information
Video memory (VRAM) for the video ports is provided in VRAM modules installed on the
graphics card. The 128-bit video system comes with 4 or 8 MB of VRAM; the 64-bit video
system comes with 2 MB of VRAM. See the table following for information about how
many colors at what resolution can be displayed on a monitor of a particular size with
different amounts of VRAM.
For Technical Support, Call 1-800-708-6227
Appendix B, Technical Information
PowerTower Pro UserÕs Guide
157
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