Owners Manual

2. Align the tabs on the cooling shroud with the securing slots on the chassis.
3. Lower the cooling shroud into the chassis until it is firmly seated.
4. Follow the procedure listed in After working inside your system.
System memory
Your system supports DDR4 registered DIMMs (RDIMMs), and load reduced DIMMs (LRDIMMs).
NOTE: MT/s indicates DIMM speed in MegaTransfers per second.
Memory bus operating frequency can be 1866 MT/s, or 2133 MT/s depending on the following factors:
● DIMM type (RDIMM or LRDIMM)
● Number of DIMMs populated per channel
● System profile selected (for example, Performance Optimized, Custom, or Dense Configuration Optimized)
● Maximum supported DIMM frequency of the processors
The system contains 24 memory sockets split into two sets of 12 sockets, one set per processor. Each 12-socket set is
organized into four channels. In each channel, the release levers of the first socket are marked white, the second socket black,
and the third socket green.
NOTE: DIMMs in sockets A1 to A12 are assigned to processor 1 and DIMMs in sockets B1 to B12 are assigned to processor
2.
20 Installing and removing system components