Lenovo System x3550 M4 Product Manual page 13

If memory rank sparing is used, then a minimum of one quad-rank DIMM or two single-rank or dual-rank DIMMs
must be installed per populated channel (the DIMMs do not need being identical). In rank sparing mode, one
rank of a DIMM in each populated channel is reserved as spare memory. The size of a rank varies depending
on the DIMMs installed.
The following table lists memory options available for the x3550 M4 server.
Table 6. Memory options
Part Feature
number code
RDIMMs - 1600 MHz
00D5024 A3QE
00D5036 A3QH
RDIMMs - 1866 MHz
00D5020 A3QD
00D5032 A3QG
00D5040 A3QJ
00D5048 A3QL
LRDIMMs
46W0761 A47K
System x3550 M4 (E5-2600 v2) (withdrawn product)
Description
4GB (1x4GB, 1Rx4, 1.35V) PC3L-12800 CL11 ECC
DDR3 1600MHz LP RDIMM
8GB (1x8GB, 1Rx4, 1.35V) PC3L-12800 CL11 ECC
DDR3 1600MHz LP RDIMM
4GB (1x4GB, 1Rx4, 1.5V) PC3-14900 CL13 ECC
DDR3 1866MHz LP RDIMM
8GB (1x8GB, 1Rx4, 1.5V) PC3-14900 CL13 ECC
DDR3 1866MHz LP RDIMM
8GB (1x8GB, 2Rx8, 1.5V) PC3-14900 CL13 ECC
DDR3 1866MHz LP RDIMM
16GB (1x16GB, 2Rx4, 1.5V) PC3-14900 CL13 ECC
DDR3 1866MHz LP RDIMM
32GB (1x32GB, 4Rx4, 1.5V) PC3-14900 CL13 ECC
DDR3 1866MHz LP LRDIMM
Maximum Standard
supported models
where used
24 (12 per CPU) A3x, B3x
24 (12 per CPU) 53x, C3x, C5x,
D3x, F3x
24 (12 per CPU) -
24 (12 per CPU) 23x, 33x, 43x,
73x, 83x, G3x,
H3x, J3x, L3x,
M3x
24 (12 per CPU) -
24 (12 per CPU) -
24 (12 per CPU) -
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