Dell PowerEdge M820 Owner's Manual page 54

Processor 3 channel 0: memory sockets C1, C5, and C9
channel 1: memory sockets C2, C6, and C10
channel 2: memory sockets C3, C7, and C11
channel 3: memory sockets C4, C8, and C12
Processor 4 channel 0: memory sockets D1, D5, and D9
channel 1: memory sockets D2, D6, and D10
channel 2: memory sockets D3, D7, and D11
channel 3: memory sockets D4, D8, and D12
The following table shows the memory populations and operating frequencies for the supported
configurations.
Processor DIMM
Type Type
Intel Xeon RDIMM
Processor E5–
4600
LRDIMM
Intel Xeon RDIMM
Processor E5–
4600 v2
LRDIMM
54
DIMMs Operating Frequency (in MT/s)
Populated/
Channel
1.5 V
1 1600, 1333, 1066,
and 800
1333, 1066, and
800
2 1600, 1333, 1066,
and 800
1066 and 800
3 1333, 1066, and
800
1 1333 and 1066
2 1333 and 1066
3 1066
1 1866, 1600, 1333,
1066, and 800
1333, 1066, and
800
2 1866, 1600, 1333,
1066, and 800
1066 and 800
3 1333, 1066, and
800
1 1866 , 1600,
1333, and 1066
Maximum DIMM
Rank/Channel
1.35 V
1333, 1066, and Dual rank
800
1066 and 800 Quad rank
1333, 1066, and Dual rank
800
1066 and 800 Quad rank
1066 and 800 Dual rank
1333 and 1066 Quad rank
1333 and 1066 Quad rank
1066 Quad rank
1600, 1333, 1066, Dual rank
and 800
1066 and 800 Quad rank
1600, 1333, 1066, Dual rank
and 800
1066 and 800 Quad rank
1066 and 800 Dual rank
1600, 1333, and Quad rank
1066