Datasheet

IBM System x3750 M4 (E5-4600 v2) 12
Table highlighting
The entries highlighted in red text in Table 5 indicate that the IBM System x3750 M4 supports higher

memory frequencies than the Intel processor specification. In some instances, this configuration also
results larger memory capacity that the specification recommends.
Tables cells highlighted with a gray background indicate when the specific combination of DIMM

voltage and number of DIMMs per channel still allows the DIMMs to operate at rated speed
Table 5. Maximum memory speeds
DIMM specification RDIMM LRDIMM
Ranks Single-rank DIMMs Dual-rank DIMMs Quad-rank
LRDIMMs
Part numbers 00D5024 (4 GB)
00D5036 (8 GB)
00D5020 (4
GB)
00D5032 (8
GB)
46W0672(16 GB) 00D5048
(16 GB)
46W0761
(32 GB)
Rated speed 1600 MHz 1866 MHz 1600 MHz 1866 MHz 1866 MHz
Rated voltage 1.35 V 1.5 V 1.35 V 1.5 V 1.5 V
Operating voltage 1.35 V 1.5 V 1.5 V 1.35 V 1.5 V 1.5 V 1.5 V
Max. qty supported* 48 48 48 48 48 48 48
Max. DIMM capacity 8 GB 8 GB 8 GB 16 GB 16 GB 16 GB 32 GB
Max. mem. capacity 384 GB 384 GB 384 GB 768 GB 768 GB 768 GB 1.5 TB
Max memory at
maximum speed
256 GB 256 GB 256 GB 512 GB 768 GB 512 GB 1.0 TB
Max operating speed (MHz)
1 DIMM per channel 1333 MHz 1600 MHz 1866 MHz 1333 MHz 1600 MHz 1866 MHz 1866 MHz
2 DIMMs per channel 1600 MHz 1600 MHz 1866 MHz 1600 MHz 1600 MHz 1866 MHz 1866 MHz
3 DIMMs per channel 1066 MHz 1333 MHz 1333 MHz 1066 MHz 1333 MHz 1333 MHz 1333 MHz
* Maximum quantity supported is shown for four processors installed. When two processors are installed, the
maximum quantity supported is a half of the quantity that is shown. When one processor is installed, the quantity is
one quarter of that shown.
The following memory protection technologies are supported:
ECC

Chipkill (for x4-based memory DIMMs, look for "x4" in the DIMM description)

Memory mirroring

Memory rank sparing

If memory mirroring is used, then DIMMs must be installed in pairs (minimum of one pair per CPU), and
both DIMMs in a pair must be identical in type and size.
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.