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112 Removing and Installing Parts
Memory Installation Guidelines
• DIMM connectors must be populated in numerical order beginning with
connectors DIMM_1 and DIMM_3, then connectors DIMM_2 and
DIMM_4.
If a single DIMM is installed, you must install it in connector DIMM_1.
• For best performance, memory modules should be installed in
pairs of
matched memory size, speed, and technology
. If the memory modules are not
installed in matched pairs, the computer will operate, but with a slight
reduction in performance. (See the label on the module to determine the
module’s capacity.) For example, if you install a mixed pair of DDR2
533-MHz and DDR2 667-MHz and 800 MHz memory, the modules
function at the slowest speed installed.
1 Pair A: matched pair of
memory modules in
connectors DIMM_1 and
DIMM_2
2 Pair B: matched pair of
memory modules in
connectors DIMM_3 and
DIMM_4
2
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book.book Page 112 Thursday, June 14, 2007 6:23 PM