Owners Manual

After working inside your system on page 54
System memory
Your system supports DDR4 registered DIMMs (RDIMM).
NOTE: MT/s indicates DIMM speed in MegaTransfers per second.
Memory bus operating frequency can be 2400 MT/s, 2133 MT/s, or 1866 MT/s depending on:
● DIMM type ( RDIMM)
● 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
Your system contains 16 memory sockets split into four sets of four sockets. DIMMs in sockets A1 to A8 are assigned to
processor 1 and DIMMs in sockets B1 to B8 are assigned to processor 2. Each 4-socket set is organized into two channels. In
each channel of the 4-socket set, the release levers of the first socket are marked white and those of the second socket are
marked black.
Figure 17. Memory socket locations
Memory channels are organized as follows:
Table 27. Memory channels
Processor channel 0 channel 1 channel 2 channel 3
Processor 1 slots A1 and A5 slots A2 and A6 slots A3 and A7 slots A4 and A8
Processor 2 slots B1 and B5 slots B2 and B6 slots B3 and B7 slots B4 and B8
The following table shows the memory populations and operating frequencies for the supported configurations.
Table 28. Memory populations and operating frequencies
DIMM Type
DIMMs Populated/
Channel
Voltage
Operating Frequency
(in MT/s)
Maximum DIMM
Rank/Channel
RDIMM 1 1.2 v 2400, 2133, and 1866 Single rank or dual rank
62 Installing and removing system components