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Whitepaper – Balanced Memory with 2nd Generation Intel® Xeon Scalable Processors
© 2019 Dell Inc. or its subsidiaries.
Internal Use - Confidential
5. Balanced Configurations (Recommended)
5.1 Traditional DIMMs
Memory controller logic was designed around having all memory slots populated to
return the highest memory bandwidth, so it should come as no surprise that the top
recommendation is a balanced configuration populated with twelve DIMMs. If a
balanced and fully populated configuration with twelve DIMMs cannot be executed,
then a balanced configuration with six DIMMs is the alternative recommendation, as
memory bandwidth is reduced by only 3% when compared to twelve DIMMs.
Figure 6: Populating all twelve slots with identical capacity DIMMs for a balanced configuration is
recommended for highest memory bandwidth and lowest memory access latency
Figure 7: Populating the first six slots with identical capacity DIMMs is recommended for the second
highest memory bandwidth and lowest memory access latency