Expansion bus specifications
The PowerEdge R640 system supports PCI express (PCIe) generation 3 expansion cards, which are installed on the system, using
expansion card risers. This system supports 1A, 2A, 1B, and 2B expansion card risers.
Memory specifications
Table 18. Memory specifications
Memory module
sockets
Architecture
Memory capacity
Minimum RAM
Maximum RAM
Twenty four 288-
pins
2667 MT/s DDR4 RDIMMs and
LRDIMMs with support for
memory optimized operation
64 GB quad rank
(LRDIMMs)
32 GB (minimum
LRDIMM size) with
single processor
LRDIMM: up to 786 GB
with single processor
8 GB single rank
(RDIMMs)
8 GB with dual
processors (minimum
one memory module per
processor)
LRDIMM: up to 1536 GB
with dual processors
16 GB or 32 GB dual rank
(RDIMMs)
RDIMM: up to 384 GB
with single processor
RDIMM: up to 786 GB
with dual processors
16 GB (NVDIMM-N)
Not supported with
single processor
Not supported with
single processor
208 GB with dual
processors
576 GB with dual
processors
NOTE:
8 GB RDIMMs and NVDIMM-N must not be mixed.
NOTE:
Minimum of two CPUs are required for any configuration that supports NVDIMM-
N.
Storage controller specifications
The PowerEdge R640 system supports:
•
Internal storage controller cards: PowerEdge RAID Controller (PERC) H330, PERC H730P, PERC H740P, HBA330, S140, and Boot
Optimized Server Storage (BOSS-S1).
•
External storage controller cards: PERC H840 and 12Gbps SAS HBA.
Hard drive specifications
The PowerEdge R640 supports SAS, SATA, Nearline SAS hard drives or solid state drives and an optional optical drive.
Hard drives
The PowerEdge R640 system supports SAS, SATA, Nearline SAS hard drives or SSDs.
Dell EMC PowerEdge R640 Installation and Service Manual
Technical specifications
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