Dell OptiPlex GX620 User Manual
Page 53
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Memory
Dell™ OptiPlex™ GX620
User's Guide
Addressing Memory With 4-GB Configurations
Replacing/Adding Additional Memory
For information on the type of memory supported by your computer, see the "Memory" section of the specifications for your computer:
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Mini Tower Computer Specifications
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Desktop Computer Specifications
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Small Form Factor Computer Specifications
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Ultra Small Form Factor 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, desktop, and small form factor computers, 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.
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:
Always install DDR2 memory modules in the order indicated on the system board.
NOTICE:
Do not install ECC memory modules. Doing so may cause the system not to boot or affect performance.
NOTE:
The ultra small form factor computer has only two slots which are considered an interleaved pair. The mini tower, desktop, and small form factor
computers have four slots.