IBM System x3650 M4 BD Product Manual page 11

The following table (Parts 1 and 2) shows the characteristics of the supported DIMMs. Tables cells that
are highlighted with a gray background indicate when the combination of DIMM voltage and the number of
DIMMs per channel still allows the DIMMs to operate at a rated speed.
Table 5. Maximum memory speeds (Part 1: RDIMMs)
DIMM specification
Rank
Part numbers
Rated speed
Rated voltage
Operating voltage
Max qty supported*
Max DIMM capacity
Max memory capacity
Max. memory at rated
speed
Maximum operating speed
1 DIMM per channel
2 DIMMs per channel
* The maximum quantity that is supported is shown for two processors installed.
** Rated speed is not supported. Memory DIMMs always operate at speeds lower than rated.
Table 5. Maximum memory speeds (Part 2: UDIMMs and LRDIMMs)
DIMM specification
Rank
Part number
Rated speed
Rated voltage
Operating voltage
Max. qty supported*
Max. DIMM capacity
Max. memory capacity
Max. memory at rated speed
Maximum operating speed
1 DIMM per channel
2 DIMMs per channel
* Maximum quantity that is supported is shown for two processors installed.
** Rated speed is not supported. Memory DIMMs always operate at speeds lower than rated.
IBM System x3650 M4 BD Product Guide
Single rank
00D5024 (4 GB) 00D5020 (4 GB)
00D5036 (8 GB) 00D5032 (8 GB)
1600 MHz
1.35 V
1.35 V 1.5 V
16 16
8 GB 8 GB
128 GB 128 GB
None** 128 GB
1333 MHz 1600 MHz
1333 MHz 1600 MHz
00D5016 (8 GB)
1.35 V
16
8 GB
128 GB
None**
1333 MHz
1333 MHz
RDIMM
00D5044 (8 GB)
46W0672 (16 GB)
1866 MHz 1600 MHz
1.5 V 1.35 V
1.5 V 1.35 V
16 16
8 GB 16 GB
128 GB 256 GB
64 GB None**
1866 MHz 1333 MHz 1600 MHz
1600 MHz 1333 MHz 1600 MHz
UDIMM
Dual rank
1600 MHz
1.35 V
1.5 V
16
8 GB
128 GB
128 GB
1600 MHz
1600 MHz
Dual rank
00D5048 (16 GB)
1866 MHz
1.5 V
1.5 V 1.5 V
16 16
16 GB 16 GB
256 GB 256 GB
256 GB 256 GB
1866 MHz
1866 MHz
LRDIMM
Quad rank
46W0761 (32 GB)
1866 MHz
1.5 V
1.5 V
16
32 GB
512 GB
256 GB
1866 MHz
1600 MHz
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