The following table lists the supported combinations of ranked DIMMs
(RDIMMs) that you can install in the server.
Note: The server does not support the mixing of RDIMMs and LR-DIMMs in
the same server.
Table 11. Supported combinations of ranked RDIMMs per memory channel
Configuration DIMM 1 (far DIMM)
DIMM 2 (middle
DIMM)
DIMM 3 (near
DIMM)
1 Single-rank Empty Empty
2 Dual-rank Empty Empty
3 Quad-rank Empty Empty
4 Single-rank Single-rank Empty
5 Dual-rank Single-rank Empty
6 Dual-rank Dual-rank Empty
7 Quad-rank Single-rank Empty
8 Quad-rank Dual-rank Empty
9 Quad-rank Quad-rank Empty
10 Single-rank Single-rank Single-rank
11 Dual-rank Single-rank Single-rank
12 Dual-rank Dual-rank Single-rank
13 Dual-rank Dual-rank Dual-rank
The following table lists the supported combinations of ranked load-reduced
DIMMs (LR-DIMMs) that you can install in the server.
Note: The server does not support the mixing of RDIMMs and LR-DIMMs in
the same server.
Table 12. Supported combinations of ranked LR-DIMMs per memory channel
Configuration
DIMM 1 (far
DIMM)
DIMM 2 (middle
DIMM)
DIMM 3 (near
DIMM)
1 Quad-rank Empty Empty
2 Quad-rank Quad-rank Empty
3 Quad-rank Quad-rank Quad-rank
v The following table lists the memory speed based on the type of ranked DIMM
and the voltage at which the DIMM runs.
Table 13. Memory speeds and configurations based on ranked DIMM type and voltage
DIMM rank,
type, and
technology
DIMM
capacity
1 DIMM per
channel
2 DIMMs per
channel
3 DIMMs per
channel
1.35 V 1.50 V 1.35 V 1.50 V 1.35 V 1.50 V
Single-rank
x4 RDIMM -
2 Gb (1333
MHz)
4 GB 1333 1333 1333 1333 1066 1066
Chapter 2. Installing optional devices 47
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