Lenovo System x3750 M4, Installation And Service Manual

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Table 11. Supported combinations of ranked RDIMMs per memory channel (continued)
Configuration DIMM 1 (far DIMM) DIMM 2 (middle DIMM) DIMM 3 (near DIMM)
7 Dual-rank Single-rank Single-rank
8 Dual-rank Dual-rank Single-rank
9 Dual-rank Dual-rank Dual-rank
The following table lists the supported combinations of ranked LR-DIMMs that you can install in the server.
Note: The server does not support the mixing of single and dual-rank RDIMMs with quad-rank 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
• 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
(1600 MHz) 4 GB
1600 1600 1600 1600 1066 1333
Single-rank x4
RDIMM - 2 Gb
(1866 MHz) 4 GB
1866 1866 1333
Single-rank x4
RDIMM - 4 Gb
(1600 MHz) 8GB
1600 1600 1600 1600 1066 1333
Single-rank x4
RDIMM - 4 Gb
(1866 MHz) 8GB
1866 1866 1333
Dual-rank x4
RDIMM - 4 Gb
(1600 MHz)
16GB
1600 1600 1600 1600 1066 1333
Dual-rank x4
RDIMM - 4 Gb
(1866 MHz)
16GB
1866 1866 1333
Quad-rank x4
LRDIMM - 4Gb
(1600 MHz) 32 GB 1600 1600 1600 1600 1333 1333
Quad-rank x4
LRDIMM - 4Gb
(1866 MHz) 32GB 1866 1866 1333
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Lenovo System x3750 M4 Installation and Service Guide