Adding Memory; Ddr Memory Overview; Installing Memory - Dell Dimension 4600C Service Manual

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Adding Memory

You can increase your computer memory by installing memory modules on the system board. For information on the type of memory supported by your
computer, see "Memory" in "Technical Specifications."
NOTE: DDR 333 memory operates at 320 MHz when used with an 800-MHz front-side bus microprocessor.

DDR Memory Overview

DDR memory modules should be installed in pairs of matched memory size. This means that if you purchased your computer with 256 MB of memory installed
and you want to upgrade to 512 MB of memory, you should replace the present memory with two 256-MB modules. If the DDR memory modules are not
installed in matched pairs, the computer will continue to operate, but with a slight reduction in performance.
NOTE: Always install DDR memory modules in the order indicated on the system board.
The recommended memory configurations are:
Install a pair of matched memory modules in connectors DDR_A0 and DDR_B0.
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Do not install ECC memory modules.
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Be sure to install a single memory module in connector DDR_A0 or the connector closest to the processor before you install modules in the other
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connectors.
NOTICE: If you remove your original memory modules from the computer during a memory upgrade, keep them separate from any new modules that
you may have, even if you purchased the new modules from Dell. You should install your original memory modules in pairs in connectors DDR_A0 and
DDR_B0. If possible, do not pair an original memory module with a new memory module. Otherwise, your computer may not function at optimal
performance.
NOTE: Memory purchased from Dell is covered under your computer warranty.

Installing Memory

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Owner's Manual or Product Information
Guide.
1. Shut down the computer through the Start menu.
2. Ensure that your computer and attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut
down your computer, turn them off now.
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.
3. Disconnect any telephone or telecommunication lines from the computer.
4. Disconnect your computer and all attached devices from their electrical outlets, and then press the power button to ground the system board.
5. Remove the computer stand, if it is attached.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
6. Open the computer cover.
7. Press out the securing clip at each end of the memory module connector.