
Chapter 5: Advanced Serverboard Setup
5-9
Populating DIMMs
Follow the tables below when installing memory.
Note: Memory speed support is dependent on the type of CPU used.
Populating DIMMs for Optimal Performance
For One CPU (CPU1) Installed
Branch 0 Branch 1 Branch 2
3 DIMMs P1 DIMM1A P1 DIMM2A P1 DIMM3A
Populating DIMMs for Optimal Performance
For One CPU (CPU2) Installed
Branch 0 Branch 1 Branch 2
3 DIMMs P2 DIMM1A P2 DIMM2A P2 DIMM3A
Populating DIMMs for Optimal Performance
For Two CPUs Installed
CPU1 CPU2
Branch 0 Branch 1 Branch 2 Branch 0 Branch 1 Branch 2
6 DIMMs P1-DIMM1A P1-DIMM2A P1-DIMM3A P2-DIMM1A P2-DIMM2A P2-DIMM3A
Memory Population Table
DIMM
Slots
per
Channel
DIMMs
Populated
per Channel
DIMM Type (Reg.=
Registered)
Speeds (in MHz) Ranks per DIMM
(any combination;
SR=Single Rank,
DR=Dual Rank,
QR=Quad Rank)
3 1 Reg. DDR3 ECC 800,1066,1333 SR, DR
3 1 Reg. DDR3 ECC 800,1066, QR
Notes: Due to OS limitations, some operating systems may not show more than
4 GB of memory.
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. (See the Table below.)
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