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Expansion bus specifications
The PowerEdge T640 system supports PCI express (PCIe) generation 3 and 2 expansion cards. The following table describes the
supported expansion cards:
Table 15. Supported PCI express generation 3 expansion cards
PCIe Slot
Processor Connection
Height
Length
Link Width
Slot Width
0 (Internal
PERC/HBA Slot)
Processor 1
Full Height
Half Length
x8
x8
1 (Gen3)
Processor 1
Full Height
Full Length
x16
x16
2 (Gen3)
Processor 1
Full Height
Full Length
x4
x8
3 (Gen3)
Processor 1
Full Height
Full Length
x16
x16
4 (Gen3)
Processor 2
Full Height
Half Length
x8
x8
5 (Gen3)
Processor 2
Full Height
Full Length
x4
x8
6 (Gen3)
Processor 2
Full Height
Full Length
x16
x16
7 (Gen3)
Processor 2
Full Height
Full Length
x8
x8
8 (Gen3)
Processor 2
Full Height
Full Length
x16
x16
NOTE:
To use PCIe slots 4, 5, 6, 7, and 8 both the processors must be installed.
NOTE:
The expansion card slots are not hot-swappable.
Memory specifications
The T640 system supports up to twenty four 288-pins RDIMMS/LRDIMMS or twelve RDIMMS/LRDIMMS and twelve NVDIMM-Ns with
speeds of 2666 MT/s, 2400 MT/s and 2133 MT/s with support for memory optimized operation.
Table 16. Memory specifications
DIMM
type
DIMM rank
DIMM capacity
Single processor
Dual processors
Minimum RAM
Maximum RAM
Minimum RAM
Maximum RAM
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
Dual rank
16 GB
16 GB
192 GB
32 GB
384 GB
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:
A minimum of two processors are required for any configuration that supports NVDIMM-N DIMMs.
Storage controller specifications
The T640 system supports:
30
Technical specifications