Dell PowerEdge R810 - Manual (Page 100)

100 Installing System Components
3 Route the SAS backplane/USB/optical drive power cables through the
cable clamp, and the control panel cable along the chassis wall. See
Figure 3-10.
CAUTION: To prevent the memory modules from being damaged, ensure that all
cables connected to the front-chassis assembly are free of obstructions.
4 Replace the cooling shroud. See "Installing the Cooling Shroud" on
page 97.
5 Close the system. See "Closing the System" on page 85.
6 If applicable, install the front bezel. See "Installing the Front Bezel" on
page 83.
System Memory
Your system supports ECC DDR3 registered DIMMs (RDIMMs). Single-,
dual-, and quad-rank DIMMs can be 1066 and 1333 MHz. RDIMMs of
capacities 1 GB, 2 GB, 4 GB, 8 GB, and 16 GB are supported for a total of up
to 512 GB.
NOTE: The system bus speed is limited to 1066 MHz. DIMMs of speed 1333 MHz will
thus operate at 1066 MHz only.
The system consists of 32 memory sockets split into four sets of eight sockets;
one set for each processor. Each eight-memory socket set is further organized
into four DDR3 memory channels. The first socket of each DDR3 memory
channel is marked with a white release lever.
In one- or two-processor configurations, FlexMem Bridges are installed in the
adjacent processor sockets to enable the processors installed in sockets 1 and
2 to access the adjacent memory set. For more information, see Table 3-5.
General Memory Module Installation Guidelines
To ensure optimal performance of your system, observe the following general
guidelines when configuring your system memory:
NOTE: Memory configurations that fail to observe these guidelines can prevent
your system from starting and producing any video output.
• DIMMs must be populated in matched pairs for each processor (for
example, A1/A2, A3/A4). Single DIMM operation is not supported.
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