Intel DQ67OW - Installing and Removing System Memory; Guidelines for Dual Channel Memory Configuration; Two or Four Dimms; Example Dual Channel Memory Configuration with Two Dimms

Intel Desktop Board DQ67OW Product Guide
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Installing and Removing System Memory
Guidelines for Dual Channel Memory Configuration
Desktop board DQ67OW has four 240-pin DDR3 DIMM sockets arranged in two
channels (A and B).
Two or Four DIMMs
Install a matched pair of DIMMs equal in speed and size (see Figure 13) in the blue
socket of channel A (DIMM 1) and channel B (DIMM 2).
Figure 13. Example Dual Channel Memory Configuration with Two DIMMs
If additional memory is to be used, install another matched pair of DIMMs (see
Figure 14) in the black socket of channel A (DIMM 3) and channel B (DIMM 4).
Figure 14. Example Dual Channel Memory Configuration with Four DIMMs