Product guide

IBM System x3100 M4 12
Memory options
IBM DDR3 memory is compatibility tested and tuned for optimal System x performance and throughput.
IBM memory specifications are integrated into the light path diagnostics for immediate system
performance feedback and optimum system uptime. From a service and support standpoint, IBM memory
automatically assumes the IBM system warranty, and IBM provides service and support worldwide.
The x3100 M4 has four DIMM slots, and only DDR3 ECC UDIMMs are supported. The CPU has two
memory channels, and there are two DIMMs per channel.
Configuration rules:
If more than one DIMM is planned to be installed, then DIMMs must be installed in a pair, and both

DIMMs in a pair must be identical in type and size.
Models with Intel Xeon E3-1200 v2 series processors support DIMMs operating at up to 1600 MHz

provided the processors support this memory speed and all DIMMs installed are rated at 1600 MHz.
The following table lists the memory options supported by the server.
Table 5. Memory options
Part
number
Feature
code
Description Maximum
supported
Standard models
where used
1333 MHz UDIMMs
44T1568 1915 1 GB (1x 1 GB, 1Rx8) PC3-10600 CL9
ECC 1333 LP UDIMM
4 -
49Y1403 A0QS 2 GB (1x2GB, 1Rx8, 1.35V) PC3L-10600
ECC DDR3 1333MHz LP UDIMM
4 -
44T1570 1913 2 GB (1x 2 GB, 1Rx8, 1.5 V) PC3-10600
CL9 ECC 1333 LP UDIMM
4 32x, 42x, 62x
49Y1404 8648 4 GB (1x4GB, 2Rx8, 1.35V) PC3L-10600
CL9 ECC DDR3 1333MHz LP UDIMM
4 -
44T1571 1912 4 GB (1x 4 GB, 2Rx8) PC3-10600
CL9 ECC 1333 LP UDIMM
4 82x
90Y3165 A1MG 8 GB (4Gb, 2Rx8, 1.5V) PC3-10600
DDR3-1333 LP UDIMM
4 -
1600 MHz UDIMMs
00D4955 A2UL 4 GB (1x4GB, 2Rx8, 1.5V) PC3-12800
CL11 ECC DDR3 1600MHz LP UDIMM
4 A2x, B2x, C2x
00D4959 A2UL 8 GB (1x8GB, 2Rx8, 1.5V) PC3-12800
CL11 ECC DDR3 1600MHz LP UDIMM
4 F4x