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Figure 7. Memory Socket Locations
Memory channels are organized as follows:
Processor 1 channel 0: memory sockets A2, A6, and A10
channel 1: memory sockets A1, A5, and A9
channel 2: memory sockets A4, A8, and A12
channel 3: memory sockets A3, A7, and A11
Processor 2 channel 0: memory sockets B2, B6, and B10
channel 1: memory sockets B1, B5, and B9
channel 2: memory sockets B4, B8, and B12
channel 3: memory sockets B3, B7, and B11
General Memory Module Installation Guidelines
NOTE: Memory configurations that fail to observe these guidelines can prevent your system from starting and
producing any video output, hanging during memory configuration, or operating with reduced memory.
This system supports Flexible Memory Configuration, enabling the system to be configured and run in any valid chipset
architectural configuration. The following are the recommended guidelines for best performance:
• UDIMMs, RDIMMs, and LRDIMMs must not be mixed.
• x4 and x8 DRAM based DIMMs can be mixed. For more information, see Mode-Specific Guidelines.
• A maximum of two UDIMMs can be populated in a channel.
• Up to three LRDIMMs can be populated regardless of rank count.
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