The installation guidelines for memory modules are as follows:
• Memory modules must be identical in size, speed, and technology.
• Memory modules installed in memory module sockets with white release levers must be identical and
the same rule applies for sockets with black and green release tabs. This ensures that identical
memory modules are installed in matched pairs—for example, A1 with A2, A3 with A4, A5 with A6, and
so on.
Table 30. Processor configuration
Processor
Configuration
Memory population
rules
Memory population
information
Single CPU
Memory population order
{1,2}, {3,4}
See Memory mirroring note
Sample memory configurations
The following tables show sample memory configurations for one and two processor configurations that
follow the appropriate memory guidelines.
NOTE: 1R, 2R, and 4R in the following tables indicate single, dual, and quad-rank DIMMs
respectively.
Table 31. Memory configurations—single processor
System
capacity
(in GB)
DIMM
size (in
GB)
Number
of DIMMs
DIMM rank, organization, and
frequency
DIMM slot population
4
4
1
1R, x8, 2400 MT/s
1R, x8, 2133 MT/s
A1
8
4
2
1R, x8, 2400 MT/s
1R, x8, 2133 MT/s
A1, A2
16
4
4
1R, x8, 2400 MT/s
1R, x8, 2133 MT/s
A1, A2, A3, A4
8
2
1R, x8, 2400 MT/s
1R, x8, 2133 MT/s
A1, A2
24
4
6
1R, x8, 2400 MT/s
1R, x8, 2133 MT/s
A1, A2, A3, A4, A5, A6
48
4
12
1R, x8, 1866 MT/s
A1, A2, A3, A4, A5, A6, A7, A8, A9,
A10, A11, A12
8
6
1R, x8, 2400 MT/s
1R, x8, 2133 MT/s
A1, A2, A3, A4, A5, A6
95
