Dell EMC PowerEdge R740xd - Memory Specifications

Table 21. Expansion card riser specifications (continued)
Riser
configuration
and supported
risers
Slot
description
PCIe slots on
riser 1 (Height
and length)
Processor
connectio
n
PCIe slots on
riser 2 (Height
and length)
Processor
connectio
n
PCIe slots on
riser 3 (Height
and length)
Processo
r
connectio
n
Slot 3: x8 full-
height, half
length
Processor 1 Slot 6: x8 low
profile, half length
Processor 1
Riser
configuration 9
(1A+2D+3A)
Three x8 and
four x16 slots
Slot 1: x16 full-
height, full length
Processor 1 Slot 4: x16 full-
height, full length
Processor 2 Slot 7: x8 full-
height, full length
Processor
2
N/A N/A Slot 5: x8 full-
height, full length
Processor 2 Slot 8: x16 full-
height, full length
Processor
2
Slot 3: x16 full-
height, half
length
Processor 1 Slot 6: x8 low
profile, half length
Processor 1
NOTE:
• Riser slots are not hot pluggable.
• Internal cable connectors are not hot pluggable.
Memory specifications
Table 22. Memory specifications
Memory module
sockets
DIMM
type
DIMM rank
DIMM
capacity
Single processor Dual processors
Minimum
RAM
Maximum
RAM
Minimum RAM Maximum RAM
Twenty four 288-
pins
LRDIMM
Octa rank 128 GB 128 GB 1.5 TB 256 GB 3 TB
Quad rank 64 GB 64 GB 768 GB 128 GB 1.5 TB
RDIMM
Single rank 8 GB 8 GB 96 GB 16 GB 192 GB
Dual rank 16 GB 16 GB 192 GB 32 GB 384 GB
Dual rank 32 GB 32 GB 384 GB 64 GB 768 GB
Dual rank 64 GB 64 GB 768 GB 128 GB 1536 GB
NVDIMM
-N
Single rank 16 GB Not
supported
with single
processor
Not supported
with single
processor
RDIMM: 192 GB RDIMM: 384 GB
NVDIMM-N: 16
GB
NVDIMM-N: 192
GB
DCPMM
NA 128 GB RDIMM:
192GB
RDIMM: 384
GB
RDIMM: 384 GB LRDIMM: 1536 GB
DCPMM: 128
GB
DCPMM: 128
GB
DCPMM: 1536
GB
DCPMM: 1536 GB
NA 256 GB NA NA RDIMM: 192 GB LRDIMM: 1536 GB
NA NA DCPMM: 2048
GB
DCPMM: 3072 GB
NA 512 GB NA NA RDIMM: 384 GB RDIMM: 1536 GB
NA NA DCPMM: 4096
GB
DCPMM: 6144 GB
NOTE: 8 GB RDIMMs and NVDIMM-N must not be mixed.
32 Technical specifications