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Dell PowerEdge FC430 Owner's Manual

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System memory

Your system supports DDR4 registered DIMMs (RDIMMs and LRDIMMs), and DDR4 voltage specifications.

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:

  • 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 system 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 configuration1 RDIMM populated per channel with 1.2v voltage operated in 2400, 2133, 1866, frequency (in MT/s). Maximum is dual rank DIMM per channel.
DIMM TypeDIMMs populated per channelVolatgeOperating Frequency (in MT/s) Maximum DIMM Rank Per Channel
RDIMM11.2 v

2400, 2133, 1866

2400, 2133, 1866

Single rank

Dual rank

LRDIMM11.2v2400, 2133, 1866Quad rank
Figure 1. Memory socket locations
This figure shows system memory locations.

Memory channels are organized as follows:

Processor 1
channel 0: slot A2
channel 1: slot A1
channel 2: slot A3
channel 3: slot A4
Processor 2
channel 0: slot B2
channel 1: slot B1
channel 2: slot B3
channel 3: slot B4

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