Dell SD630-S Owner's Manual page 74

Figure 19. Memory socket locations
Memory channels are organized as follows:
Table 30. Memory channels
Processor Channel 0
Processor 1 Slots A1, A5, and A9 Slots A2, A6, and
Processor 2 Slots B1, B5, and B9 Slots B2, B6, and
The following table shows the memory populations and operating frequencies for the supported
configurations:
74
Channel 1 Channel 2
Slots A3, A7, and
A10 A11
Slots B3, B7, and
B10 B11
Channel 3
Slots A4, A8, and
A12
Slots B4, B8, and
B12