General Memory Module Installation Guidelines; Memory Channels; Supported Memory Matrix - Dell EMC PowerEdge R7525 Installation And Service Manual

Figure 67. Memory channels
Memory channels are organized as follows:
Table 34. Memory channels
Processor Channel
A
Processor 1 Slots A6
and A12
Processor 2 Slots B6
and B12
Table 35. Supported memory matrix
DIMM type Rank
RDIMM 1 R
2 R
LRDIMM 8 R

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
Channel B Channel C
Slots A5 Slots A2 and
and A11 A10
Slots B5 Slots B2 and
and B11 B10
Capacity
8 GB
16 GB, 32 GB, 64 GB DDR4 (1.2 V), 3200
128 GB
Channel D Channel E
Slots A1 and Slots A8 and
A9 A16
Slots B1 and Slots B8 and
B9 B16
DIMM rated
voltage and speed
DDR4 (1.2 V), 3200
MT/s
MT/s
DDR4 (1.2 V), 2666
MT/s
Installing and removing system components
Channel F Channel G
Slots A7 and Slots A4 and
A15 A14
Slots B7 and Slots B4 and
B15 B14
Operating Speed
1 DIMM per
channel (DPC)
3200 MT/s
3200 MT/s
2666 MT/s
Channel H
Slots A3 and
A13
Slots B3 and
B13
2 DIMMs per
channel (DPC)
2933 MT/s
2933 MT/s
2666 MT/s
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