Dimm Module Population Confi Guration - Supermicro H8DGU User Manual

H8DGU-F Serverboard User's Manual
-For a Motherboard with One CPU (CPU1) Installed
# DIMMS CPU
4 DIMMs CPU1
8 DIMMs CPU1
-For a Motherboard with Two CPUs (CPU1 & CPU2) Installed
# DIMMS CPU
CPU1
8 DIMMs
CPU2
CPU1
16 DIMMs
CPU2
DIMM Module Population Confi guration
For memory to work properly, follow the tables below for memory installation:
DIMM Type
Unbuffered
DIMM
Registered
DIMM
Note 1: Due to OS limitations, some operating systems may not show more than
4 GB of memory.
Note 2: Due to memory allocation to system devices, the amount of memory that
remains available for operational use will be reduced when 4 GB of RAM is used.
The reduction in memory availability is disproportional.
Memory Population for Optimal Performance
Channel 1
P1-1A
P1-1A P1-1B
Memory Population for Optimal Performance
Channel 1
P1-1A
P2-1A
P1-1A P1-1B
P2-1A P2-1B
Per Channel DIMM Populations Options
DIMM A DIMM B
SR or DR Empty
SR SR
DR DR
SR or DR Empty
SR SR
DR DR
QR Empty
QR QR
Channel 2 Channel 3
P1-2A P1-3A
P1-2A P1-2B P1-3A
Channel 2 Channel 3
P1-2A P1-3A
P2-2A P2-3A
P1-2A P1-2B P1-3A
P2-2A P2-2B P2-3A
Max. MHz, Max. MHz,
1.5V DIMMs 1.35V DIMMs
1333 MHz 1333 MHz
1333 MHz 1333 MHz
1333 MHz 1066 MHz
1066 MHz
2-6
Channel 4
P1-4A
P1-3B P1-4A P1-4B
Channel 4
P1-4A
P2-4A
P1-3B P1-4A P1-4B
P2-3B P2-4A P2-4B
Max. GB/
Channel
8 GB
16 GB
16 GB
800 MHz 32 GB