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channel 1: memory sockets 1 and 3
channel 2: memory sockets 2 and 4
The following table shows the memory populations and operating frequencies for the supported
configurations.
DIMM Type DIMMs Populated/
Channel
Operating Frequency (in
MT/s)
Maximum DIMM Rank/
Channel
1.35 V
UDIMM ECC 1 1333, 1600 Dual rank
2 1333, 1600 Dual rank
General Memory Module Installation Guidelines
NOTE: Memory configurations that fail to observe these guidelines can prevent your system from
booting, hanging during memory configuration, or operating with reduced memory.
This 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 best
performance:
• x4 and x8 DRAM based DIMMs can be mixed.
• Populate all sockets with white release tabs first, and then black.
• Populate the sockets by highest rank count in the following order – first in sockets with white release
levers, and then black. For example, if you want to mix quad-rank and dual-rank DIMMs, populate
quad-rank DIMMs in the sockets with white release tabs and dual-rank DIMMs in the sockets with
black release tabs.
• Memory modules of different sizes can be mixed provided that other memory population rules are
followed (for example, 4 GB and 8 GB memory modules can be mixed).
• If memory modules with different speeds are installed, they will operate at the speed of the slowest
installed memory module(s) or slower depending on system DIMM configuration.
Sample Memory Configurations
The following table shows sample memory configurations that follow the appropriate memory guidelines
stated in this section.
NOTE: Minimum supported memory is 4 GB and maximum supported memory is 32 GB.
NOTE: 1R and 2R in the following table indicates single- and dual-rank DIMMs respectively.
Table 1. Memory Configurations
System Capacity
(in GB)
DIMM Size (in
GB)
Number of
DIMMs
DIMM Rank, Organization,
and Frequency
DIMM Slot
Population
4 4 1 1R, x8, 1333 MT/s, 1
1R, x8, 1600 MT/s
8 4 2 1R, x8, 1333 MT/s, 1, 2
1R, x8, 1600 MT/s
16 4 4 2R, x4, 1333 MT/s, 1, 2, 3, 4
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