Dell PowerEdge R860 Installation And Service Manual page 118

Figure 79. Memory channels on Processor Expansion Module (PEM) board
Memory channels are organized as follows:
Table 88. Memory channels
Processo Channel
r A
Processor
Slot A9
1 (system
board)
Slot A1
Processor
Slot B9
2 (system
board)
Slot B1
Processor
Slot C9
3 (PEM)
Slot C1
Processor
Slot D9
4 (PEM)
Slot D1
Table 89. Supported memory matrix
DIMM type Rank
RDIMM 1 R
2 R
4 R
118 Installing and removing system components
Channel Channel C
B
Slot A15 Slot A11
Slot A7 Slot A3
Slot B15 Slot B11
Slot B7 Slot B3
Slot C15 Slot C11
Slot C7 Slot C3
Slot D15 Slot D11
Slot D7 Slot D3
Capacity
16 GB
32 GB, 64 GB
128 GB
Channel D Channel E
Slot A13 Slot A12
Slot A5 Slot A4
Slot B13 Slot B12
Slot B5 Slot B4
Slot C13 Slot C12
Slot C5 Slot C4
Slot D13 Slot D12
Slot D5 Slot D4
DIMM rated
voltage and
speed
DDR5 (1.1 V), 4800
MT/s
DDR5 (1.1 V), 4800
MT/s
DDR5 (1.1 V), 4800
MT/s
Channel F Channel G
Slot A14 Slot A10
Slot A6 Slot A2
Slot B14 Slot B10
Slot B6 Slot B2
Slot C14 Slot C10
Slot C6 Slot C2
Slot D14 Slot D10
Slot D6 Slot D2
Operating Speed
1 DIMM per
channel (DPC)
4800 MT/s
4800 MT/s
4800 MT/s
Channel H
Slot A16
Slot A8
Slot B16
Slot B8
Slot C16
Slot C8
Slot D16
Slot D8
2 DIMMs per
channel (DPC)
4400 MT/s
4400 MT/s
4400 MT/s