Dell PowerEdge R740xd - Memory Specifications

Riser
conguration
and supported
risers
Slot description PCIe slots on
riser 1 (Height
and length)
Processor
connection
PCIe slots on riser
2 (Height and
length)
Processor
connection
PCIe slots on
riser 3 (Height
and length)
Processor
connection
Riser
conguration 5
(1B+2A+3A)
Six x8 and two
x16 slots
Slot 1: x8 full-
height, full length
Processor 1 Slot 4: x16 full-
height, full length
Processor 2 Slot 7: x8 full-
height, full length
Processor
2
Slot 2: x8 full-
height, full length
Processor 1 Slot 5: x8 full-
height, full length
Processor 2 Slot 8: x16 full-
height, full length
Processor
2
Slot 3: x8 full-
height, half length
Processor 1 Slot 6: x8 low
prole, half length
Processor 1
Riser
conguration 6
(1D+2A+3A)
Five x8 and
three x16 slots
Slot1: 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
Slot 2: x8 full-
height, full length
Processor 1 Slot 5: x8 full-
height, full length
Processor 2
Slot 8: x16 full-
height, full length
Processor
2
Slot 3: x8 full-
height, half length
Processor 1 Slot 6: x8 low
prole, half length
Processor 1
Riser
conguration 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
prole, half length
Processor 1
Memory specications
The PowerEdge R740xd system supports up to twenty four 288-pins RDIMMS, LRDIMMS and NVDIMM-Ns with speeds of 2666 MT/s,
2400 MT/s and 2133 MT/s with support for memory optimized operation.
Table 19. Memory
specications
DIMM type DIMM rank
DIMM
capacity
Single processor Dual processors
Minimum RAM Maximum RAM Minimum RAM Maximum RAM
LRDIMM Octa rank 128 GB 128 GB 1536 GB 256 GB 3072 GB
LRDIMM Quad rank 64 GB 64 GB 768 GB 128 GB 1536 GB
RDIMM Single rank 8 GB 8 GB 96 GB 16 GB 192 GB
RDIMM Dual rank 16 GB 16 GB 192 GB 32 GB 384 GB
RDIMM Dual rank 32 GB 32 GB 384 GB 64 GB 768 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
NOTE: 8 GB RDIMMs and NVDIMM-N must not be mixed.
NOTE: Minimum of two CPUs are required for any congurations that support NVDIMM-
N.
Technical specications 29