100 Installing System Components3 Route the SAS backplane/USB/optical drive power cables through thecable clamp, and the control panel cable along the chassis wall. SeeFigure 3-10.CAUTION: To prevent the memory modules from being damaged, ensure that allcables connected to the front-chassis assembly are free of obstructions.4 Replace the cooling shroud. See "Installing the Cooling Shroud" onpage 97.5 Close the system. See "Closing the System" on page 85.6 If applicable, install the front bezel. See "Installing the Front Bezel" onpage 83.System MemoryYour system supports ECC DDR3 registered DIMMs (RDIMMs). Single-,dual-, and quad-rank DIMMs can be 1066 and 1333 MHz. RDIMMs ofcapacities 1 GB, 2 GB, 4 GB, 8 GB, and 16 GB are supported for a total of upto 512 GB.NOTE: The system bus speed is limited to 1066 MHz. DIMMs of speed 1333 MHz willthus 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 organizedinto four DDR3 memory channels. The first socket of each DDR3 memorychannel is marked with a white release lever.In one- or two-processor configurations, FlexMem Bridges are installed in theadjacent processor sockets to enable the processors installed in sockets 1 and2 to access the adjacent memory set. For more information, see Table 3-5.General Memory Module Installation GuidelinesTo ensure optimal performance of your system, observe the following generalguidelines when configuring your system memory:NOTE: Memory configurations that fail to observe these guidelines can preventyour system from starting and producing any video output.• DIMMs must be populated in matched pairs for each processor (forexample, A1/A2, A3/A4). Single DIMM operation is not supported.
