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Independent memory mode

Independent memory mode provides high performance memory capability. The memory channels can be populated with DIMMs in any order in independent mode. You can populate all six channels on each processor in any order with no matching requirements. Individual channels can run at different DIMM timings, but all channels must run at the same interface frequency.

If a memory channel has two DIMMs, populate the DIMM with a higher number of ranks in slot 0. If the ranks are the same, populate the one with higher capacity in slot 0.

Table 1. DIMM population sequence for independent-channel mode (DIMM 1-12).
Number of installed DIMMs1 processor installed
DIMM connector
15
25, 8
35, 8, 3
45, 8, 3, 10
55, 8, 3, 10, 1
65, 8, 3, 10, 1, 12
73, 5, 8, 10, 12, 4, 6
83, 4, 5, 6, 8, 10, 7, 9
93, 4, 5, 6, 8, 10, 12, 1, 2
101, 2, 3, 4, 5, 6, 8, 10, 7, 9
111, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12
121, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 11
13Not used - maximum of 12 DIMMs in systems with 1 processor
Table 2. DIMM population sequence for independent-channel mode.
Number of installed DIMMs2 processors installed
DIMM connector
25, 20
45, 20, 8, 17
65, 8, 17, 20, 3, 22
83, 5, 8, 17, 20, 22, 10, 15
103, 5, 8, 10, 15, 17, 20, 22, 1, 24
121, 3, 5, 8, 10, 13, 15, 17, 20, 22, 12, 24
143, 5, 8, 10, 12, 13, 15, 17, 20, 22, 4, 6, 19, 21
163, 4, 5, 6, 8, 10, 15, 17, 19, 20, 21, 22, 7, 9, 16, 18
183, 4, 5, 6, 8, 10, 15, 17, 19, 20, 21, 22, 1, 2, 12, 13, 23, 24
201, 2, 3, 4, 5, 6, 8, 10, 15, 17, 19, 20, 21, 22, 23, 24, 7, 9, 16, 18
221, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 12, 13
241, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 11, 14