Dell PowerEdge XR8620t Installation and Service Manual

System memory guidelines

The PowerEdge XR8620t system supports DDR5 registered DIMMs (RDIMMs). System memory holds the instructions that are performed by the processor.

Your system memory is organized into eight channels(one memory slot per channel).

Memory channels are organized as follows:

Table 1. Memory channelsThe table 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	Slots A1	Slots A7	Slots A3	Slots A5	Slots A4	Slots A6	Slots A2	Slots A8

Table 2. Supported memory matrixThe table describes the supported memory matrix.
DIMM type	Rank	Capacity	DIMM rated voltage	Operating Speed
DIMM type	Rank	Capacity	DIMM rated voltage	1 DIMM per channel (DPC)
RDIMM	1 R	16 GB	DDR5 (1.1 V)	4800 MT/s
RDIMM	2 R	32 GB, 64 GB	DDR5 (1.1 V)	4800 MT/s

NOTE:The processor may reduce the performance of the rated DIMM speed.