Intel D925XHY English Product Guide - Page 32

Intel Desktop Board D925XHY Product Guide 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/pcsdram/spec/ Desktop Board D925XHY has four 240-pin DIMM sockets arranged as DIMM 0 and DIMM 1 in both Channel A and Channel B, as shown in Figure 16. 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 12) in DIMM 0 (blue) of both channels A and B. 1 GB, 400 MHz 1 GB, 400 MHz Channel A Channel B DIMM 0 DIMM 1 DIMM 0 DIMM 1 Figure 12. 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 13). 256 MB, 400 MHz 512 MB, 400 MHz 256 MB, 400 MHz 512 MB, 400 MHz Channel A Channel B DIMM 0 DIMM 1 DIMM 0 DIMM 1 Figure 13. Dual Configuration Example 2 32