Supermicro H8DGU-LN4F+, User Manual

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Chapter 2: Installation
2-9
Memory Population for Optimal Performance
For a Motherboard with One CPU (CPU1) Installed
DIMM # Channel 1 Channel 2 Channel 3 Channel 4
4 DIMMs P1-1A P1-2A P1-3A P1-4A
8 DIMMs P1-1A P1-1C P1-2A P1-2C P1-3A P1-3C P1-4A P1-4C
12 DIMMs P1-1A P1-1B P1-1C P1-2A P1-2B P1-2C P1-3A P1-3B P1-3C P1-4A P1-4B P1-4C
Memory Population for Optimal Performance
For a Motherboard with Two CPUs (CPU1 & CPU2) Installed
CPU Channel 1 Channel 2 Channel 3 Channel 4
8 DIMMs
CPU1 P1-1A P1-2A P1-3A P1-4A
CPU2 P2-1A P2-2A P2-3A P2-4A
16 DIMMs
CPU1 P1-1A P1-1C P1-2A P1-2C P1-3A P1-3C P1-4A P1-4C
CPU2 P2-1A P2-1C P2-2A P2-2C P2-3A P2-3C P2-4A P2-4C
24 DIMMs
CPU1 P1-1A P1-1B P1-1C P1-2A P1-2B P1-2C P1-3A P1-3B P1-3C P1-4A P1-4B P1-4C
CPU2 P2-1A P2-1B P2-1C P2-2A P2-2B P2-2C P2-3A P2-3B P2-3C P2-4A P2-4B P2-4C
Note: Memory speed support is dependent on the type of CPU used on the board.