Users Guide

Installing System Board Options 9-7
System memory can be increased up to 512 megabytes (MB) using unbuffered
SDRAM dual in-line memory modules (DIMMs) or up to 1024 MB using registered
SDRAM DIMMs (see Tables 9-1 and 9-2). Unbuffered and registered SDRAM DIMMs
cannot be mixed.
Figure 9-5 shows the DIMMs and DIMM sockets.
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When adding system memory, you may install DIMMs in any order. For optimum
operation, Dell recommends installing the DIMMs starting with socket A (closest to
the top edge of the system board) and working toward socket D, leaving no open
sockets between installed DIMMs.
Tables 9-1 and 9-2 list sample memory configurations.
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64 MB 32 MB 32 MB
64 MB 64 MB
96 MB 32 MB 32 MB 32 MB
128 MB 32 MB 32 MB 32 MB 32 MB
192 MB 64 MB 64 MB 32 MB 32 MB
256 MB 128 MB 128 MB
384 MB 64 MB 64 MB 128 MB 128 MB
512 MB 128 MB 128 MB 128 MB 128 MB
A
B
DIMM
sockets
DIMMs (4)
C
D
23205BK0.BK : 23205C90.FM Page 7 Wednesday, March 18, 1998 1:51 PM
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