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PowerEdge 11th Generation Servers: R810, R910, and M910 Memory Guidance
Page 7
The R910 has eight memory risers; each memory riser has two Millbrook memory buffers and eight
DIMM slots.
Figure 3. R910 Series Servers Memory Illustration
Note: This illustration is not a technical schematic of a motherboard. DIMMs in Risers A and B
correspond to CPU 1, DIMMs in Risers C and D correspond to CPU 2, DIMMs in Risers E and F correspond
to CPU 3, and DIMMs in Risers G and H correspond to CPU 4. A CPU must be present to populate the
riser. A system can operate with only one riser per CPU.
Optimizing Memory Performance for Intel Xeon 7500 and 6500 Series
Processors
Intel Xeon 7500 and 6500 Series processors support a maximum memory performance of
1066 MTs.
Best Performance
2 DIMMS per Memory Buffer Channel, all memory controllers populated equally with 64 DIMMs and 8
Memory Risers (R910) (see Figure 4) or 32 identical DIMMs (R810, M910) (see Figure 5), highest
bandwidth and lowest latency
Better Performance
1 DIMM per Memory Buffer Channel, all memory controllers populated equally with 32 DIMMs and 8
Memory Risers (R910) (see Figure 6) or 16 identical DIMMS (R810, M910) (see Figure 7), slight bandwidth
decrease