Dell External M620 t Owner's Manual page 31

DIMM Type DIMMs Populated/
Channel
3
LRDIMM 1
2
3
Figure 7. Memory Socket Locations
Memory channels are organized as follows:
Processor 1 channel 0: memory sockets A2, A6, and A10
channel 1: memory sockets A1, A5, and A9
channel 2: memory sockets A4, A8, and A12
channel 3: memory sockets A3, A7, and A11
Processor 2 channel 0: memory sockets B2, B6, and B10
channel 1: memory sockets B1, B5, and B9
channel 2: memory sockets B4, B8, and B12
channel 3: memory sockets B3, B7, and B11
Operating Frequency (in MT/s)
1.5 V
1333, 1066, and 800
1333 and 1066
1333 and 1066
1066
1.35 V
1066 and 800
1333 and 1066
1333 and 1066
1066
Maximum DIMM Rank/
Channel
Dual rank
Quad rank
Quad rank
Quad rank
31