Table 4. Memory channels
Channel 0
Channel 1
Slot A1 and A3
Slot A2 and A4
Table 5. Memory population
DIMM Type
DIMMs Populated/
Channel
Voltage
Operating Frequency
Maximum DIMM Rank/Channel
UDIMM
1
1.2 V
2666 MT/s
Dual rank or Single rank
2
The following table shows sample memory configurations.
NOTE:
1R and 2R in the following table indicate single and dual-rank memory modules respectively.
Table 6. Memory configurations
Populated system
capacity (in GB)
Memory module size (in
GB)
Number of memory
modules
Memory module rank,
organization, and
frequency
Memory module slot
population
8
8
1
1R, x8, 2666 MT/s
A1
16
8
2
1R, x8, 2666 MT/s
A1, A2
16
1
2R, x8, 2666 MT/s
A1
32
16
2
2R, x8, 2666 MT/s
A1, A2
8
4
1R, x8, 2666 MT/s
A1, A2, A3, A4
64
16
4
2R, x8, 2666 MT/s
A1, A2, A3, A4
General memory module installation guidelines
To ensure optimal performance of your system, observe the following general guidelines when configuring your system memory. If your
system's memory configurations fail to observe these guidelines, your system might not boot, stop responding during memory
configuration, or operate with reduced memory.
The memory bus may operate at frequency can be 2666 MT/s, 2400 MT/s, or 2133 MT/s depending on the following factors:
•
System profile selected (for example, Performance Optimized, or Custom [can be run at high speed or lower])
•
Maximum supported DIMM speed of the processors
•
Maximum supported speed of the DIMMs
NOTE:
MT/s indicates DIMM speed in MegaTransfers per second.
The system supports Flexible Memory Configuration, enabling the system to be configured and run in any valid chipset architectural
configuration. The following are the recommended guidelines for installing memory modules:
•
All DIMMs must be DDR4.
•
A maximum of two different ranked DIMMs can be populated in a channel regardless of rank count.
•
If memory modules with different speeds are installed, they will operate at the speed of the slowest installed memory module(s).
•
Populate memory module sockets only if a processor is installed.
60
Installing and removing system components
