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Dell PowerEdge R430 Owner's Manual

System memory

Your system supports DDR4 registered DIMMs (RDIMMs).

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 the following factors:

  • System profile selected (for example, Performance Optimized, Custom, or Dense Configuration Optimized)
  • Maximum supported DIMM frequency of the processors

The system contains 12 memory sockets split into four sets — two sets of 4 sockets and two sets of 2 sockets each. Each 4-socket set is organized into two channels and each 2–socket set is organized into one channel. In each channel of the 4-socket set, the release levers of the first socket are marked white and the second socket black. In the 2-socket set, each release lever is marked white.

NOTE DIMMs in sockets A1 to A8 are assigned to processor 1 and DIMMs in sockets B1 to B4 are assigned to processor 2.
Figure 1. System memory board
This image shows system memory board.

Memory channels are organized as follows:

Processor 1
channel 0: memory sockets A1 and A5
channel 1: memory sockets A2 and A6
channel 2: memory sockets A3 and A7
channel 3: memory sockets A4 and A8
Processor 2
channel 0: memory sockets B1
channel 1: memory sockets B2
channel 2: memory sockets B3
channel 3: memory sockets B4

The following table shows the memory populations and operating frequencies for the supported configurations.

Table 1. Supported configurationsThis table describe about the memory populations and operating frequencies for the supported configurations.
DIMM type DIMMs populated/channel Voltage Operating frequency (in MT/s) Maximum DIMM rank/channel
RDIMM 1 1.2 V 2400, 2133, 1866 Dual rank or single rank

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