Figure 25. System memory view
Memory channels are organized as follows:
Table 24. Memory channels
Processor Channel 0 Channel 1 Channel 2 Channel 3 Channel 4 Channel 5
Processor 1 Slots A1 and A7 Slots A2 Slots A3 Slots A4 and A8 Slots A5 Slots A6
Processor 2 Slots B1 and B7 Slots B2 Slots B3 Slots B4 and B8 Slots B5 Slots B6
General memory module installation guidelines
Your system supports Flexible Memory Conguration, enabling the system to be congured and run in any valid chipset architectural
conguration. The following are the recommended guidelines for best performance:
• LRDIMMs, and RDIMMs must not be mixed.
• x4 and x8 DRAM based DIMMs can be mixed. For more information, see the Mode-specic guidelines section.
• A maximum of two dierent ranked DIMMs can be populated in a channel.
• If memory modules with dierent speeds are installed, they operate at the speed of the slowest installed memory module(s) or slower
depending on system DIMM conguration.
• Populate DIMM sockets only if a processor is installed. For single-processor systems, sockets A1 to A8 are available. For dual-processor
systems, sockets A1 to A8 and sockets B1 to B8 are available.
• Populate the sockets by highest capacity DIMM in the following order - rst in sockets with white release levers and then black. For
example, if you want to mix 16 GB and 8 GB DIMMs, populate 16 GB DIMMs in the sockets with white release tabs and 8 GB DIMMs in
the sockets with black release tabs.
• In a dual-processor conguration, the memory conguration for each processor must be identical. For example, if you populate socket
A1 for processor 1, then populate socket B1 for processor 2, and so on.
• Memory modules of dierent sizes can be mixed provided that other memory population rules are followed (for example, 4 GB and 8
GB memory modules can be mixed).
• Depending on mode-specic guidelines, populate six DIMMs per processor (one DIMM per channel) at a time to maximize performance.
For more information, see the Mode-specic guidelines section.
Related link
Mode-specic guidelines
68
Installing and removing system components
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