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A+ SERVER 2022G-URF User's Manual
Memory Support
The H8DGU(-F) serverboard supports single/dual/tri/quad-channel,
DDR3-1600/1333/1066 Mhz registered ECC/Unbuffered ECC/non-ECC SDRAM.
Populating four adjacent slots at a time with memory modules of the same size and
type will result in interleaved (128-bit) memory, which is faster than non-interleaved
(64-bit) memory.
Maximum Memory
The H8DGU(-F) serverboard supports up to 128 GB of ECC/Non-ECC Unbuffered,
512 GB of Low-prole ECC Registered LRDIMM, or 512 GB of ECC Registered
DIMM SDRAM in sixteen (16) slots.
Memory Population for Optimal Performance
-For a Motherboard with One CPU (CPU1) Installed
# DIMMS CPU Channel 1 Channel 2 Channel 3 Channel 4
4 DIMMs CPU1 P1-1A P1-2A P1-3A P1-4A
8 DIMMs CPU1 P1-1A P1-1B P1-2A P1-2B P1-3A P1-3B P1-4A P1-4B
Memory Population for Optimal Performance
-For a Motherboard with Two CPUs (CPU1 & CPU2) Installed
# DIMMS 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 P1-1B P1-2A P1-2B P1-3A P1-3B P1-4A P1-4B
CPU2 P2-1A P2-1B P2-2A P2-2B P2-3A P2-3B P2-4A P2-4B
DIMM Module Population Conguration
For memory to work properly, follow the tables below for memory installation:
Per Channel DIMM Populations Options
DIMM Type 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 1600 MHz 16 GB
DR DR 1600 MHz 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 1333 MHz 64 GB