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DIMM Installation Rules
At least one DIMM must be configured in slots supported by CPU 1.
Optimal memory performance can be achieved if the processors in a device are configured with the same number of DIMMs and the DIMMs are evenly distributed among the memory channels. Unbalanced configuration reduces memory performance and is not recommended.
In unbalanced DIMM configuration, DIMMs are not evenly configured for memory channels and (or) processors.
- If a processor is configured with 5 or 7 DIMMs, the DIMMs are not evenly configured for memory channels.
- If the processors in a device are configured with different number of DIMMs, the DIMMs are not evenly configured for processors.
- The recommended DIMM quantity for a 4-socket device is 4, 8, 12, 16, 24, or 32.
Memory configuration must comply with the DIMM installation rules. For details, see the Computing Product Memory Configuration Assistant. Install dummy DIMMs in vacant DIMM slots.