General Memory Module Installation Guidelines - Dell EMC XC640 Series Installation And Service Manual

Appliance and xc core system
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Figure 25. Memory socket locations
Memory channels are organized as follows:
Table 36. Memory channels
Processor
Channel 0
Processor 1
Slots A1 and A7
Processor 2
Slots B1 and B7

General memory module installation guidelines

To ensure optimal performance of your system, observe the following general guidelines when configuring your system memory.
If your system's memory configurations fail to observe these guidelines, your system might not boot, stop responding during
memory configuration, or operate with reduced memory.
Memory bus operating frequency can be 2666 MT/s, 2400 MT/s, or 2133 MT/s depending on the following factors:
● System profile selected (for example, Performance Optimized, or Custom [can be run at high speed or lower])
Channel 1
Channel 2
Slots A2 and A8
Slots A3 and A9
Slots B2 and B8
Slots B3 and B9
Channel 3
Channel 4
Slots A4 and
Slots A5 and A11 Slots A6 and
A10
Slots B4 and
Slots B5 and B11 Slots B6 and
B10
Installing and removing system components
Channel 5
A12
B12
67

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