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Memory and Microprocessor Configuration

5–3

Upgrading SDRAM Memory

Note:

The following are important items to remember

- in order for the ECC memory feature to work, all DIMMs must be 72bit.

- To populate a bank,you must use 2 matched DIMMs.

5.2 Upgrading SDRAM Memory

You can upgrade memory in the AlphaPC 164UX by adding more DIMMs or
replacing the ones that you have with a greater size. Refer to Figure 2–1 for DIMM
connector locations.

Use the following general guidelines:

Observe antistatic precautions. Handle DIMMs only at the edges to prevent
damage.

Remove power from the system.

Open levers and align the DIMM.

256MB

32MB

256MB

64MB

672MB

256MB

64MB

16MB

704MB

256MB

64MB

32MB

768MB

128MB

256MB

64MB

256MB

128MB

800MB

256MB

128MB

16MB

832MB

256MB

128MB

32MB

896MB

256MB

128MB

64MB

1024MB

256MB

128MB

256MB

1056MB

256MB

16MB

1088MB

256MB

32MB

1152MB

256MB

64MB

1280MB

256MB

128MB

1536MB

256MB

Table 5–1 AlphaPC 164UX SDRAM Memory Configurations

Total

Memory

Bank 0

Bank 1

Bank 2