Memory channels are organized as follows:
Processor 1 channel 0: slots A1, A5, and A9
channel 1: slots A2, A6, and A10
channel 2: slots A3, A7, and A11
channel 3: slots A4, A8, and A12
Processor 2 channel 0: slots B1, B5, and B9
channel 1: slots B2, B6, and B10
channel 2: slots B3, B7, and B11
channel 3: slots B4, B8, and B12
The following table shows the memory populations and operating frequencies for the supported
configurations.
Table 25. Sample memory configurations
System Capacity (GB) DIMM Size Number of DIMMs DIMM Slot Population
64 16 2 A1
B1
128 16 4 A1, A2
B1, B2
256 16 8 A1, A2, A3, A4
B1, B2, B3, B4
384 16 12 A1, A2, A3, A4, A5, A6
B1, B2, B3, B4, B5, B6
512 32 16 A1, A2, A3, A4, A5, A6,
A7, A8
B1, B2, B3, B4, B5, B6,
B7, B8
768 32 24 A1, A2, A3, A4, A5, A6,
A7, A8, A9, A10, A11, A12
B1, B2, B3, B4, B5, B6,
B7, B8, B9, B10, B11, B12
General memory module installation guidelines
This system supports Flexible Memory Configuration, you can configure and run the system in any valid
chipset architectural configuration. The following are the recommended guidelines for best performance:
RDIMMs and LRDIMMs must not be mixed.
You can use x4 and x8 DRMS-based DIMMs. For more information, see Mode-Specific Guidelines in
this document.
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