Intel D975XBX - Manual (Page 31)

Installing and Replacing Desktop Board Components
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Installing and Removing Memory
Desktop Board D975XBX has four 240-pin DIMM sockets arranged as DIMM 0 and DIMM 1 in
both Channel A and Channel B, as shown in Figure 17.
Guidelines for Dual Channel Memory Configuration
Before installing DIMMs, read and follow these guidelines for dual channel configuration.
Two or Four DIMMs
Install a matched pair of DIMMs equal in speed and size (see Figure 13) in DIMM 0 (blue) of both
channels A and B.
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Channel B
Channel A
1 GB, 533 MHz
1 GB, 533 MHz DIMM 0
DIMM 1
DIMM 0
DIMM 1
Figure 13. Dual Channel Memory Configuration Example 1
If additional memory is to be used, install another matched pair of DIMMs in DIMM 1 (black) in
both channels A and B (see Figure 14).
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Channel B
Channel A
256 MB, 533 MHz
256 MB, 533 MHz
512 MB, 533 MHz
512 MB, 533 MHz
DIMM 0
DIMM 1
DIMM 0
DIMM 1
Figure 14. Dual Channel Memory Configuration Example 2