Installing and Replacing Desktop Board Components
31
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.
OM18182
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).
OM18183
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