Table 3. Supported UDIMM population per channel
DIMM
connectors per
channel
DIMMs installed
in each channel DIMM type
DIMM speed
Ranks per
DIMM (any
combination)
2
1
Unbuffered
DDR3 ECC
1066, 1333
Single-rank,
dual-rank
2
2
Unbuffered
DDR3 ECC
1066, 1333
Single-rank,
dual-rank
v
The following table lists the maximum DIMM population using ranked UDIMMs.
Table 4. Maximum memory population using ranked UDIMMs (depending on your model)
Number of UDIMMs
DIMM type
Size
Total memory
4
Single-rank UDIMMs
1 GB
4 GB
4
Dual-rank UDIMMs
2 GB
8 GB
4
Dual-rank UDIMMs
4 GB
16 GB
4
Dual-rank UDIMMs
8 GB (when
available)
32 GB
v
The following table shows the UDIMM memory population rule to optimize the
system performance.
Table 5. UDIMM population rule
DIMM connector 1
DIMM connector 2
DIMM connector 3
DIMM connector 4
Populated
Empty
Empty
Empty
Populated
Empty
Populated
Empty
Populated
Populated
Populated
Populated
The following illustration shows the location of the DIMM connectors on the system
board.
30
System x3100 M4 Type 2582: Installation and User's Guide
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