General Memory Module Installation Guidelines - Dell PowerEdge R930 Owner's Manual

Processor channel 0:
3 slots E1, E5,
and E9
Processor channel 0:
4 slots G1, G5,
and G9
The following table shows the memory populations and operating frequencies for the supported configurations (Performance Mode (2:1)):
Table 33. Memory population
DIMM Type DIMMs Populated/
Channel (DPC)
RDIMM 1
2
3
LRDIMM 1
2
3
The following table shows the memory populations and operating frequencies for the supported configurations (Lock Step Mode (1:1)):
Table 34. Memory population for Lock Step Mode (1:1)
DIMM Type DIMMs Populated/
Channel (DPC)
RDIMM 1
2
3
LRDIMM 1
2
3

General memory module installation guidelines

Your system supports Flexible Memory Configuration, enabling the system to be configured and run in any valid chipset architectural
configuration. The following are the recommended guidelines for best performance:
• RDIMMs and LRDIMMs cannot be mixed.
• x4 and x8 DRAM based DIMMs can be mixed. For more information, see Mode-Specific Guidelines.
• Populate up to three dual- or single-rank RDIMMs per channel.
• Up to three quad rank LRDIMMs can be populated per channel.
• Up to three LRDIMMs can be populated regardless of rank count.
• Populate DIMM sockets only if a processor is installed. For dual-processor systems, sockets A1 to A12, B1 to B12 and sockets C1 to C12,
D1 to D12 are available. Each processor requires a minimum of 2 DIMMs, which must be identical.
channel 1: channel 2:
slots E2, E6, slots E3, E7,
and E10 and E11
channel 1: channel 2:
slots G2, G6, slots G3, G7,
and G10 and G11
DIMM Size
32 GB
32 GB
32 GB
64 GB
64 GB
64 GB
DIMM Size
32 GB
32 GB
32 GB
64 GB
64 GB
64 GB
channel 3: channel 0:
slots E4, E8, slots F1, F5,
and E12 and F9
channel 3: channel 0:
slots G4, G8, slots H1, H5,
and G12 and H9
Operating Frequency (in
MT/s)
DDR4 2400 MT/s (1.2 V)
1600 MT/s
1600 MT/s
1333 MT/s
1600 MT/s
1600 MT/s
1600 MT/s
Operating Frequency (in
MT/s)
DDR4 2133 MT/s (1.2 V)
1866 MT/s
1866 MT/s
1333 MT/s
1866 MT/s
1866 MT/s
1600 MT/s
Installing and removing system components
channel 1: channel 2:
slots F2, F6, slots F3, F7,
and F10 and F11
channel 1: channel 2:
slots H2, H6, slots H3, H7,
and H10 and H11
Maximum DIMM Rank/Channel
Dual rank
Dual rank
Dual rank
Quad rank
Quad rank
Quad rank
Maximum DIMM Rank/Channel
Dual rank
Dual rank
Dual rank
Quad rank
Quad rank
Quad rank
channel 3:
slots F4, F8,
and F12
channel 3:
slots H4, H8,
and H12
67