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Before you install memory, do the following:
Inspect DIMM keying. The finger contacts on the DIMM must match the socket
configuration. This ensures that you have the correct voltage and type of DIMM.
Inspect DIMM contacts. The DIMM must have gold-plated fingers that match the gold-
plated socket contacts.
Follow these population rules to correctly install the DIMMs:
The system board features two memory controllers. DIMM banks 0, 2, and 4 are
maintained by the primary memory controller; banks 1, 3, and 5 are maintained by the
secondary memory controller.
If you are installing both unbuffered and registered DIMMs, you must install the
unbuffered DIMMs in banks 0, 2, 4 or banks 1, 3, 5, and the registered DIMMs in banks
1, 3, 5 or banks 0, 2, 4, respectively.
For best performance, populate both memory controllers equally when an even number of
DIMMs are used. For example, if two DIMMs are used, install them into Bank 0 and
Bank 1.
Remember that you can install DIMMs one at a time.
Press the DIMM straight down into the socket. Do not rock the DIMM; apply even
pressure along the top edge of the DIMM.
Restart the computer after adding or replacing DIMMs. The computer detects the new
memory automatically.
The following table shows possible memory configurations. Each bank contains one socket.
Primary Memory Controller
Secondary Memory Controller
Memory
Bank 0
Bank 2
Bank 4
Bank 1
Bank 3
Bank 5
64 MB
64 MB
128 MB
64 MB
64 MB
128 MB
256 MB
64 MB
64 MB
64 MB
64 MB
128 MB
128 MB
256 MB
384 MB
64 MB
64 MB
64 MB
64 MB
64 MB
64 MB
128 MB
128 MB
128 MB
256 MB
128 MB
512 MB
128 MB
128 MB
128 MB
128 MB
256 MB
256 MB
