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Installing the cooling shroud
Prerequisites
CAUTION: Many repairs may only be done by a certified service technician. You should only
perform troubleshooting and simple repairs as authorized in your product documentation, or as
directed by the online or telephone service and support team. Damage due to servicing that is
not authorized by Dell is not covered by your warranty. Read and follow the safety instructions
that came with the product.
NOTE: You must remove the cooling shroud to service other components inside the system.
1. Ensure that you read the Safety instructions.
2. Follow the procedure listed in Before working inside your system.
Steps
1. Align the cooling shroud guide with the guide slot on the chassis.
2. Press the cooling shroud into the system until the release latch engages with the slot on the chassis
and clicks into place.
Next steps
Follow the procedure listed in After working inside your system.
System memory
Your system supports DDR4 registered DIMMs (RDIMMs), load reduced DIMMs (LRDIMMs) and DDR4
voltage specifications.
NOTE: MT/s indicates DIMM speed in MegaTransfers per second.
Memory bus operating frequency can be 2133 MT/s, 1866 MT/s, 1600 MT/s, or 1333 MT/s depending on:
• System profile selected (for example, Performance Optimized, Custom, or Dense Configuration
Optimized)
• Maximum supported DIMM frequency of the processors
The system contains eight memory sockets split into two sets of four sockets, one set per processor.
DIMMs in sockets A1 to A4 are assigned to processor 1 and DIMMs in sockets B1 to B4 are assigned to
processor 2. The server supports one DIMM per channel. In each four socket set, the release levers of the
first-to-populate socket are marked white and those of the second socket are marked black. The DIMM
sockets A3, A4, B3 and B4 need to have the memory module inserted 180 ° reverse with regard to the
DIMMS in the A1, A2 and B1, B2 sockets.
The following table shows the memory populations and operating frequencies for the supported
configurations.
Table 1. Memory population — operating frequency for supported configuration
DIMM Type DIMMs Populated Per
Channel
Operating Frequency (in
MT/s) For 1.2 V
Maximum DIMM Rank Per
Channel
RDIMM 1
2133, 1866, 1600, 1333 Single rank
Dual rank
39