76 Adding Parts
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RDRAM Overview NOTICE: If you remove your original memory modules from the computer
during a memory upgrade, keep them separa te from any new modules that you
may have, even if the new modules were purchased from Dell. Your original
memory modules must be installed as a pair in either connectors RIMM1 and
RIMM 2 or RIMM 3 and RIMM4. Do not pair one original memory module
with one new memory module in connectors RIMM1 and RIMM2 or RIMM3
and RIMM4. Otherwise, your computer may not start properly.
RDRAM technology requires that all memory connectors have either a
memory module or a continuity module installed. Memory modules and
continuity modules are easily identified—memory modules have a metal
cover on one side of the module and continuity modules do not.
HINT: The metal cover
on a memory module is
manufactured in various
colors. The color of the
metal cover has no effect
on the module’s
performance.
Memory modules are the actual components that provide memory for the
microprocessor; continuity modules are used only to complete the memory
circuit if memory modules are not installed in all of the memory connectors.
Another RDRAM requirement is that memory modules must be installed in
pairs of matched memory size. This means that if you purchased your
computer with 128 MB of memory installed and you want to add another
128 MB of memory, you must remove the two continuity modules and
replace them with two 64-MB memory modules.
memory module
continuity module
metal cover
9p915bk0.book Page 76 Thursday, April 4, 2002 9:26 AM