Datasheet

IBM System x3650 M4 BD 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 RDIMM
Rank Single rank Dual rank
Part numbers 00D5024 (4 GB)
00D5036 (8 GB)
00D5020 (4 GB)
00D5032 (8 GB)
00D5044 (8 GB)
46W0672 (16 GB)
00D5048 (16 GB)
Rated speed 1600 MHz 1866 MHz 1600 MHz 1866 MHz
Rated voltage 1.35 V 1.5 V 1.35 V 1.5 V
Operating voltage 1.35 V 1.5 V 1.5 V 1.35 V 1.5 V 1.5 V
Max qty supported* 16 16 16 16 16 16
Max DIMM capacity 8 GB 8 GB 8 GB 16 GB 16 GB 16 GB
Max memory capacity 128 GB 128 GB 128 GB 256 GB 256 GB 256 GB
Max. memory at rated
speed
None** 128 GB 64 GB None** 256 GB 256 GB
Maximum operating speed
1 DIMM per channel 1333 MHz 1600 MHz 1866 MHz 1333 MHz 1600 MHz 1866 MHz
2 DIMMs per channel 1333 MHz 1600 MHz 1600 MHz 1333 MHz 1600 MHz 1866 MHz
* 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 UDIMM LRDIMM
Rank Dual rank Quad rank
Part number 00D5016 (8 GB) 46W0761 (32 GB)
Rated speed 1600 MHz 1866 MHz
Rated voltage 1.35 V 1.5 V
Operating voltage 1.35 V 1.5 V 1.5 V
Max. qty supported* 16 16 16
Max. DIMM capacity 8 GB 8 GB 32 GB
Max. memory capacity 128 GB 128 GB 512 GB
Max. memory at rated speed None** 128 GB 256 GB
Maximum operating speed
1 DIMM per channel 1333 MHz 1600 MHz 1866 MHz
2 DIMMs per channel 1333 MHz 1600 MHz 1600 MHz
* 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.