Cisco UCS C210 M2 General-Purpose Rack-Mount Server
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SUPPLEMENTAL MATERIAL
Memory Population Rules
When considering the memory configuration of your server, you should consider the following items:
■ DIMMs within the server should all be the same type and speed. If you mix different DIMM
types or DIMMs with different clock rates in the same server, such configurations are
supported; however, these configurations may cause the system to operate at less than
optimum levels. See
Table 26 on page 49 for recommended DIMM combinations.
■ DIMMs can be used either in a one DIMM per Channel (1DPC) configuration or in a two DIMMs
per Channel (2DPC) configuration.
■ There are blue and black DIMM slots. Populate blue slots in a bank first.
■ Low-voltage (1.35 V) DIMM and standard-voltage DIMM (1.5 V) can be mixed in the same
server. Note that this causes the system BIOS to default to standard-voltage operation
(Performance Mode). See
Low-Voltage DIMM Considerations.
Low-Voltage DIMM Considerations
The C210 M2 server can be ordered with low-voltage (1.35 V) DIMMs or standard-voltage (1.5 V) DIMMs. Note
the following considerations:
■ Low-voltage DIMMs within the server must have the identical manufacturer, type, speed,
and size.
■ Low-voltage DIMMs and standard-voltage DIMMs can be mixed in the same server. Note that
this causes the system BIOS to default to standard-voltage operation (Performance Mode).
That is, the server cannot operate in Power Saving Mode unless all DIMMs are low-voltage
DIMMs.
■ CPUs that have a maximum memory frequency less than 1333 MHz support low-voltage
DIMMs operating in Power Saving Mode only, and do not support Performance Mode.
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