Intel D955XCS - Manual (Page 32)

Intel Desktop Board D955XCS Product Guide
32
Installing and Removing Memory
CAUTION
To be fully compliant with all applicable Intel SDRAM memory specifications, the board requires
DIMMs that support the Serial Presence Detect (SPD) data structure. You can access the PC
Serial Presence Detect Specification at:
http://www.intel.com/technology/memory/ddr/specs/dda18c32_64_128x72ag_a.pdf
Desktop Board D955XCS 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.
Channel A
1 GB, 533 MHz DIMM 0
DIMM 1
Channel B
1 GB, 533 MHz
DIMM 0
DIMM 1
Figure 13. Dual 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).
Channel A
256 MB, 533 MHz DIMM 0
512 MB, 533 MHz DIMM 1
Channel B
256 MB, 533 MHz DIMM 0
512 MB, 533 MHz DIMM 1
Figure 14. Dual Configuration Example 2