The H8DGU(-F) supports up to 512GB of Registered ECC or 128GB Unbuffered ECC/non-ECC DDR3 1600/1333/1066MHz SDRAM in 16 DIMM slots. Populating DIMMs in groups of four, one per channel (4, 8 DIMMs/CPU), the same DIMM type in H8DGU(-F) each channel, the same amount of memory on each CPU will improve memory performance. Please refer to the table below:
Table 1 - Per channel populations options | |||||
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DIMM A | DIMM B | Max. MHz, 1.5V DIMMs | Max. MHz, 1.35V DIMMs | Max. GB / channel | |
UDIMM | SR or DR | Empty | 1600 MHz | 1333 MHz | 8 GB |
SR | SR | 1600 MHz | 8 GB | ||
DR | DR | 1333 MHz | 16 GB | ||
RDIMM | SR or DR | Empty | 1600 MHz | 1333 MHz | 16 GB |
SR | SR | 16 GB | |||
DR | DR | 32 GB | |||
QR | Empty | 1333 MHz | 1066 MHz | 32 GB | |
QR | QR | 1066 MHz | 800 MHz | 64 GB | |
LRDIMM | QR | Empty | 1333 MHz | 32 GB | |
QR | QR | 64 GB |
Please follow the tables below when populating the H8DGU(-F).
Table 2 - Memory Population for Optimal Performance For a Motherboard with One CPU (CPU1) Installed |
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# DIMMs | CPU | Channel 1 | Channel 2 | Channel 3 | Channel 4 | ||||
4 DIMMs | CPU 1 | P1-1A | P1-2A | P1-3A | P1-4A | ||||
8 DIMMs | CPU 1 | P1-1A | P1-1B | P1-2A | P1-2B | P1-3A | P1-3B | P1-4A | P1-4B |
Table 3 - Memory Population for Optimal Performance For a Motherboard with Two CPUs (CPU 1 & CPU 2 Installed) |
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# DIMMs | CPU | Channel 1 | Channel 2 | Channel 3 | Channel 4 | ||||
8 DIMMs | CPU 1 | P1-1A | P1-2A | P1-3A | P1-4A | ||||
CPU 2 | P2-1A | P2-2A | P2-3A | P2-4A | |||||
16 DIMMs | CPU 1 | P1-1A | P1-1B | P1-2A | P1-2B | P1-3A | P1-3B | P1-4A | P1-4B |
CPU 2 | P2-1A | P2-1B | P2-2A | P2-2B | P2-3A | P2-3B | P2-4A | P2-4B |