Installing System Components 123
1
When available.
Table 3-2. Memory Rank Population Guidelines for Speed
DIMM 1 DIMM 2
Max MHz,
1.5V DIMMs
Max MHz,
1.35V DIMMs
(6-core only)
Max
GB/Channel
UDIMM
Single-Rank or
Dual-Rank
Empty 1333 MHz 1333 MHz 4 GB
Single-Rank Single-Rank 1333 MHz 1333 MHz 4 GB
Dual-Rank
Single-Rank or
Dual-Rank
1066 MHz 1066 MHz 8 GB
RDIMM
Single-Rank or
Dual-Rank
Empty 1333 MHz 1333 MHz 8 GB
Single-Rank Single-Rank 1333 MHz 1333 MHz 8 GB
Dual-Rank
Single-Rank or
Dual-Rank
1066 MHz 1066 MHz 16 GB
Quad-Rank Empty 1333 MHz 1066 MHz 16 GB
Quad-Rank
Single-Rank,
Dual-Rank, or
Quad-Rank
800 MHz 667 MHz 32 GB
Table 3-3. Sample RDIMM Single-, Dual-, and Quad-Rank Memory Configurations
(Per Processor)
Memory
Module
Size
Memory Sockets Single Processor Dual Processor
1324Physical
Memory (GB)
Available
Memory (GB)
Physical
Memory (GB)
Available
Memory (GB)
2 GB X
X
XX
X
XX
2
4
8
all 4
8
16
all
4 GB X
X
XX
X
XX
4
8
16
all 8
16
32
all
8 GB X
XX
X
XX
16
32
all 32
64
all
16 GB
1
X
XX
X
XX
32
64
all 64
128
all
R415HOM.book Page 123 Friday, September 24, 2010 9:37 AM