Ddr2 Memory Overview - Dell GX620 - 3.6GHz Desktop 1GB RAM 80GB Windows XP SFF User Manual

Memory
For information on the type of memory supported by your computer, see the "Memory" section of the
specifications for your computer:
• Mini Tower Computer Specifications
• Desktop Computer Specifications
• Small Form Factor Computer Specifications
• Ultra Small Form Factor Computer Specifications
NOTICE:
Before you install new memory modules, download the most recent BIOS for your computer
from the Dell Support website at support.dell.com.

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.
NOTE:
Always install DDR2 memory modules in the order indicated on the system board.
The recommended memory configurations are:
• A pair of matched memory modules installed in connectors DIMM1 and DIMM2
or
• A memory module installed in connector DIMM1
or
• 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
NOTICE:
Do not install ECC memory modules. Doing so may cause the system not to boot or affect
performance.
256MB 2R XX XXX
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Memory