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System memory
System memory guidelines
Your system contains 16 memory sockets split into two sets of 8 sockets, one set per processor. Each 8-socket set is organized into six
channels. Six memory channels are allocated to each processor. In each channel, the release tabs of the first three sockets are marked
white, and the fourth socket black.
Figure 26. System memory view
Memory channels are organized as follows:
Table 24. 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.
The memory bus may operate at 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])
•
Maximum supported DIMM speed of the processors
•
Maximum supported speed of the DIMMs
NOTE:
MT/s indicates DIMM speed in MegaTransfers per second.
The system supports Flexible Memory Configuration, enabling the system to be configured and run in any valid chipset architectural
configuration. The following are the recommended guidelines for installing memory modules:
•
All DIMMs must be DDR4.
•
RDIMMs and LRDIMMs must not be mixed.
Channel 1
Channel 2
Slots A2
Slots A3
Slots B2
Slots B3
Channel 3
Channel 4
Slots A4 and A8
Slots A5
Slots B4 and B8
Slots B5
Installing and removing system components
Channel 5
Slots A6
Slots B6
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