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For mixed memory configurations, populating eight traditional DIMMs in the inner eight slots and eight DCPMMs in the outer eight slots will reap the highest memory bandwidth. The benefits gained from DCPMMs persistence and increased capacity will largely offset the memory bandwidth degradation from having two interleave sets.
Figure 15. When using both DIMMs and DCPMMs, populating the inner eight slots with same-capacity traditional DIMMs and the outer eight slots with same-capacity DCPMMs is recommended. Two interleave sets are created because DIMMs and DCPMMs are unique drives with unique capacities, making them unbalanced. Despite the memory bandwidth degradation that occurs from having two interleave sets, the persistence and increased capacity gained from DCPMMs will still enable various potential benefits