Dell EMC PowerEdge T340 DPJ1G User Manual

General memory module installation guidelines
To ensure optimal performance of your system, observe the following general guidelines when conguring your system memory. If your
system's memory congurations fail to observe these guidelines, your system might not boot, stop responding during memory
conguration, 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 prole 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 Conguration, enabling the system to be congured and run in any valid chipset architectural
conguration. The following are the recommended guidelines for installing memory modules:
• All DIMMs must be DDR4.
• A maximum of two dierent ranked DIMMs can be populated in a channel regardless of rank count.
• If memory modules with dierent 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.
– For single-processor systems, sockets A1 to A4 are available.
– In Optimizer Mode, the DRAM controllers operate independently in the 64-bit mode and provide optimized memory performance.
Table 6. Memory population rules
Processor Conguration Memory population Memory population information
Single processor Optimizer (Independent channel)
population order
1, 2, 3, 4 Odd amount of DIMMs per processor
allowed.
• Populate all the sockets with white release tabs rst, followed by the black release tabs.
• When mixing memory modules with dierent capacities, populate the sockets with memory modules with the highest capacity rst.
For example, if you want to mix 8 GB and 16 GB memory modules, populate 16 GB memory modules in the sockets with white release
tabs and 8 GB memory modules in the sockets with black release tabs.
• Memory modules of dierent capacities can be mixed provided other memory population rules are followed.
For example, 8 GB and 16 GB memory modules can be mixed.
• Mixing of more than two memory module capacities in a system is not supported.
• Unbalanced memory congurations will result in a performance loss so always populate memory channels identically with identical
DIMMs for best performance.
• To ensure proper system cooling, memory module blanks must be installed in memory sockets that are not occupied.
Removing a memory module
Prerequisites
WARNING
: Allow the memory modules to cool after you power o the system. Handle the memory modules by the edges and
avoid touching the components or metallic contacts on the memory module.
CAUTION: To ensure proper system cooling, when processor 1 and processor 2 are installed, memory module blanks must be
installed in memory sockets that are not occupied. Remove memory module blanks only if you intend to install memory modules
in those sockets.
1 Follow the safety guidelines listed in Safety instructions.
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Installing and removing system components

Dell EMC PowerEdge T340 DPJ1G Specifications

General

Brand	Dell EMC
Model	PowerEdge T340 DPJ1G
Category	Server
Language	English