IBM System x3650 M4 Product Manual page 22

Table 5. Maximum memory speeds (Part 4: Intel Xeon processor E5-2600 product family - UDIMMs,
HyperCloud DIMMs, and LRDIMMs)
DIMM specification
Rank
Part number 49Y1404 (4 GB)
Rated speed
Rated voltage
Operating voltage 1.35 V
Max. qty supported* 16
Max. DIMM capacity 4 GB
Max. memory 64 GB
capacity
Max. memory at rated 32 GB
speed
Maximum operating speed
1 DIMM per channel 1333 MHz 1333 MHz
2 DIMMs per channel 1066 MHz 1333 MHz
3 DIMMs per channel No
support
* Maximum quantity supported is shown for two processors installed. When one processor is installed, the
maximum quantity supported is a half of the quantity that is shown.
The following memory protection technologies are supported:
ECC

Chipkill (for x4-based memory DIMMs)

Memory mirroring

Memory rank sparing

If memory mirroring is used, DIMMs must be installed in pairs (minimum of one pair per each 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.
IBM System x3650 M4
UDIMM
Dual rank
00D5004 (32
GB)
1333 MHz 1066 MHz
1.35 V 1.5 V
1.5 V 1.5 V
16 24
4 GB 32 GB
64 GB 768 GB
64 GB 768 GB
1066 MHz
1066 MHz
No 1066 MHz
support
HyperCloud DIMM
Dual rank
00D4964 (16 46W0767 (32 GB)
GB)
1333 MHz 1333 MHz
1.5 V 1.35 V
1.5 V 1.35 V
24 24
16 GB 32 GB
384 GB 768 GB
384 GB 512 GB
1333 MHz 1333
MHz
1333 MHz 1333
MHz
1333 MHz 1066
MHz
LRDIMM
Quad rank
90Y3105 (32 GB)
1333 MHz
1.35 V
1.5 V 1.35 V 1.5 V
24 24 24
32 GB 32 GB 32 GB
768 GB 768 GB 768 GB
768 GB 256 GB 512 GB
1333 1333 1333
MHz MHz MHz
1333 1066 1333
MHz MHz MHz
1333 1066 1066
MHz MHz MHz
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