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• Memory modules must be identical in size, speed, and technology.
• DIMMs installed in memory sockets with white release tabs must be identical and similar rule applies for
sockets with black and green release tabs. This ensures that identical DIMMs are installed in matched pairs -
for example, A1 with A2, A3 with A4, A5 with A6, and so on.
Sample Memory Configuration Table
The following tables show sample memory configurations for one and two processor configurations that follow the
appropriate memory guidelines stated in this section.
NOTE: 16 GB quad-rank RDIMMs are not supported.
NOTE: 1R, 2R, and 4R in the following tables indicate single-, dual-, and quad-rank DIMMs respectively.
Table 1. Memory Configurations—Single Processor
System Capacity
(in GB)
DIMM Size (in
GB)
Number of
DIMMs
DIMM Rank, Organization,
and Frequency
DIMM Slot Population
2 2 1
1R, x8, 1333 MT/s,
1R, x8, 1600 MT/s
A1
4 2 2
1R, x8, 1333 MT/s,
1R, x8, 1600 MT/s
A1, A3
8 2 4
1R, x8, 1333 MT/s,
1R, x8, 1600 MT/s
A1, A2, A3, A4
12 2 6
1R, x8, 1333 MT/s,
1R, x8, 1600 MT/s
A1, A2, A3, A4, A5, A6
16 2 8
1R, x8, 1333 MT/s A1, A2, A3, A4, A5, A6, A7, A8
4 4
2R, x8, 1333 MT/s,
2R, x8, 1600 MT/s
A1, A2, A3, A4
24 2 12
1R, x8, 1333 MT/s A1, A2, A3, A4, A5, A6, A7, A8, A9, A10,
A11, A12
4 6
2R, x8, 1333 MT/s,
2R, x8, 1600 MT/s
A1, A2, A3, A4, A5, A6
48 4 12
2R, x8, 1333 MT/s A1, A2, A3, A4, A5, A6, A7, A8, A9, A10,
A11, A12
8 6
2R, x4, 1333 MT/s,
2R, x4, 1600 MT/s
A1, A2, A3, A4, A5, A6
96 8 12
2R, x4, 1333 MT/s A1, A2, A3, A4, A5, A6, A7, A8, A9, A10,
A11, A12
16 6
2R, x4, 1333 MT/s,
2R, x4, 1600 MT/s
A1, A2, A3, A4, A5, A6
128 16 8
2R, x4, 1333 MT/s,
2R, x4, 1600 MT/s,
A1, A2, A3, A4, A5, A6, A7, A8
384 32 12
LRDIMM, x4, 1333 MT/s A1, A2, A3, A4, A5, A6, A7, A8, A9, A10,
A11, A12
51