Dell OptiPlex 745c, User Manual

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Memory
Dell™ OptiPlex™ 745c User's Guide
DDR2 Memory Overview
Addressing Memory With 4-GB or Greater Configurations (32-bit Operating Systems Only)
Removing Memory
Installing Memory
Your computer supports non-ECC DDR2 memory only. For more information on the type of memory supported by your computer, see the "Memory" section for
the specifications of your computer:
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Mini Tower Computer Specifications
DDR2 Memory Overview
Dual-channel DDR2 memory modules should be installed in pairs of matched memory size . If the DDR2 memory modules are not installed with the same amount
of memory in each channel, the computer will continue to operate, but with a slight reduction in performance. See the label in the upper-right corner of the
module to determine the module's capacity.
The recommended memory configurations are:
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A pair of matched memory modules installed in connectors DIMM1 and DIMM2
or
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A memory module installed in connector DIMM1
or
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For the mini tower computers only, a pair of matched memory modules installed in connectors DIMM1 and DIMM2 and another matched pair installed in
connectors DIMM3 and DIMM4
Be sure to install a single memory module in DIMM1, the connector closest to the processor, before you install modules in the other connectors.
Mini Tower Form Factor Matched Pairs
NOTICE: Before you install new memory modules, download the most recent BIOS for your computer from the Dell Support website at
support.dell.com .
NOTE: Memory purchased from Dell is covered under your computer warranty.
NOTICE: Do not install ECC memory modules. Doing so may cause the system not to boot or otherwise impact performance.
NOTE: Always install DDR2 memory modules in the order indicated on the system board.
NOTE: The mini tower computer has four slots.
A matched pair of memory modules in connectors DIMM1 and DIMM2 (white securing clips)
B matched pair of memory modules in connectors DIMM3 and DIMM4 (black securing clips).