System Memory Guidelines - Dell E665 Owner's Manual

System memory guidelines

The VxRail E665 system supports DDR4 registered DIMMs (RDIMMs). System memory holds the instructions that are executed
by the processor.
Your system memory is organized into eight channels per processor (two memory sockets per channel) for a total of 16 memory
sockets per processor. In each channel, the 1st socket is marked white and the 2nd socket black.
Figure 14. Memory socket location
Memory channels are organized as follows:
Table 38. Memory channels
Processor Channel A
AMD Slots 6 and
Processor 12
Table 39. Supported memory matrix
DIMM type Rank
type
RDIMM 2R
Channel B Channel C
Slots 5 and Slots 2 and
11 10
Capacity DIMM rated voltage and
speed
16 GB, 32 GB, 64 DDR4 (1.2V), 3200 MT/s
GB
Channel D Channel E
Slots 1 and Slots 8 and
9 16
Operating Speed
1 DIMM per
Channel (DPC)
3200 MT/s
Channel F Channel G
Slots 7 and Slots 4 and
15 14
2 DIMMs per
Channel (DPC)
2933 MT/s
Replacing and adding hardware
Channel H
Slots 3 and
13
33