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Dell EMC PowerEdge R550 Installation and Service Manual

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System memory guidelines

The PowerEdgeR550 system supports DDR4 registered DIMMs (RDIMMs). System memory holds the instructions that are executed by the processor.

Your system contains 16 memory sockets organized into 8 channels per processor.

Memory channels are organized as follows:

Table 1. Memory channelsThis tables describes memory channels and how the channels are organized.
Processor Channel A Channel B Channel C Channel D Channel E Channel F Channel G Channel H
Processor 1 A1 A5 A3 A7 A2 A6 A4 A8
Processor 2 B1 B5 B3 B7 B2 B6 B4 B8
Figure 1. Memory channels
This image shows the memory socket location.
Table 2. Supported memory matrixThis tables describes Supported memory matrix.
DIMM type Rank Capacity DIMM rated voltage and speed Operating speed for DIMMs per Channel (DPC)
RDIMM 1R 8 GB DDR4 (1.2V), 3200 MT/s 2933 MT/s
2R 16 GB, 32 GB, 64 GB DDR4 (1.2V), 3200 MT/s 2933 MT/s

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