Memory installation guidelines:
• 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 configurations
The following tables show sample memory configurations that follow the appropriate memory guidelines
stated in this section.
NOTE: 1R, 2R, and 4R in the following tables indicate single-, dual-, and quad-rank DIMMs
respectively.
NOTE: When using an 86 mm wide heat sink for single processor, the memory module sockets A10
and A12 are not available for population.
Table 3. Memory configurations – single processor
System
Capacity (in GB) DIMM Size (in
GB) Number of
DIMMs Organization and
Speed DIMM Slot Population
16 4 4 1R x8, 2133 MT/s A1, A2, A3, A4
24 4 6 1R x8, 2133 MT/s A1, A2, A3, A4, A5, A6
48 4 12 1R x8, 1600 MT/s A1, A2, A3, A4, A5, A6, A7, A8, A9,
A10, A11, A12
48 8 6 2R x8, 2133 MT/s A1, A2, A3, A4, A5, A6
96 8 12 2R x8, 1600 MT/s A1, A2, A3, A4, A5, A6, A7, A8, A9,
A10, A11, A12
96 16 6 2R x4, 2133 MT/s A1, A2, A3, A4, A5, A6
128 16 8 2R x4, 2133 MT/s A1, A2, A3, A4, A5, A6, A7, A8
144 16 and 8 10 2R x4, 1600 MT/s A1, A2, A3, A4, A5, A6, A7, A8, A9,
A11
NOTE: 16 GB DIMMs must
be installed in the slots
numbered A1, A2, A3, A4, A5,
A6, A7, and A8 and 8 GB
DIMMs must be installed in
slots A9 and A11.
256 32 8 4R x4, 2133 MT/s A1, A2, A3, A4, A5, A6, A7, A8
384 32 12 4R x4, 1600 MT/s A1, A2, A3, A4, A5, A6, A7, A8, A9,
A10, A11, A12
49