Chapter 2: Installation
2-9
Memory Population for Optimal Performance
-For a Serverboard 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
Memory Population for Optimal Performance
-For a Serverboard 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
Memory Population for Optimal Performance – For a Serverboard
with Four CPUs (CPU1, CPU2, CPU3 & CPU4) Installed
# DIMMS
CPU
Channel 1
Channel 2
Channel 3
Channel 4
16 DIMMs
CPU1
P1-1A
P1-2A
P1-3A
P1-4A
CPU2
P2-1A
P2-2A
P2-3A
P2-4A
CPU3
P3-1A
P3-2A
P3-3A
P3-4A
CPU4
P4-1A
P4-2A
P4-3A
P4-4A
DIMM Module Population Confi guration
For memory to work properly, follow the tables below for memory installation:
Per Channel DIMM Populations Options
DIMM Type
DIMM A
Max. MHz,
1.5V DIMMs
Max. MHz,
1.35V DIMMs
Max. GB/
Channel
UDIMM
SR or DR
1866 MHz
1600 MHz
8 GB
RDIMM
SR or DR
1866 MHz
1600 MHz
16 GB
QR
1333 MHz
1333 MHz
32 GB
LRDIMM
QR
1333 MHz
32 GB
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.
