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Table 5. Maximum memory speeds (Part 2: Intel Xeon processor E5-2600 product family - UDIMMs and
LRDIMMs)
Specification
Rank
Part numbers
Rated speed
Rated voltage
Operating voltage
Maximum quantity*
Largest DIMM
Maximum memory
capacity
Maximum memory
at rated speed
Maximum operating speed (MHz)
1 DIMM per channel
2 DIMMs per channel
3 DIMMs per channel
* Maximum quantity supported is shown for two processors installed. When one processor installed the maximum
quantity supported is a half of 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, then DIMMs must be installed in pairs (a 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.
System x3550 M4 (E5-2600)
UDIMMs
Dual rank
49Y1404 (4 GB)
1333 MHz
1.35 V
1.35 V
1.5 V
16
16
4 GB
4 GB
64 GB
64 GB
32 GB
64 GB
1333 MHz
1333 MHz
1066 MHz
1333 MHz
Not supported
Not supported
LRDIMMs
Quad rank
90Y3105 (32 GB)
1333 MHz
1.35 V
1.35 V
1.5 V
24
24
32 GB
32 GB
768 GB
768 GB
256 GB
512 GB
1333 MHz
1333 MHz
1066 MHz
1333 MHz
1066 MHz
1066 MHz
12