Product guide

IBM System x3500 M4 19
Table 5. Maximum memory speeds (Part 4: Intel Xeon processor E5-2600 product family - UDIMMs and
LRDIMMs)
DIMM specification UDIMM LRDIMM
Rank Dual rank Quad rank
Part number 49Y1403 (4 GB)
49Y1404 (8 GB)
90Y3105 (32 GB)
Rated speed 1333 MHz 1333 MHz
Rated voltage 1.35 V 1.35 V
Operating voltage 1.35 V 1.5 V 1.35 V 1.5 V
Max. qty supported* 16 16 24 24
Max. DIMM capacity 4 GB 4 GB 32 GB 32 GB
Max. memory capacity 64 GB 64 GB 768 GB 768 GB
Max. memory at rated speed 64 GB 64 GB 256 GB 512 GB
Maximum operating speed_
1 DIMM per channel 1333 MHz 1333 MHz 1333 MHz 1333 MHz
2 DIMMs per channel 1333 MHz 1333 MHz 1066 MHz 1333 MHz
3 DIMMs per channel Not supported Not supported 1066 MHz 1066 MHz
* The maximum quantity supported is shown for two processors installed. When one processor installed the
maximum quantity supported is a half of that shown.
The following memory protection technologies are supported:
ECC
Chipkill (for x4-based memory DIMMs)
Memory mirroring
Memory sparing
Chipkill works only in independent channel mode (default operational mode) and supports only x4-based
memory DIMMs.
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.
Note: Chipkill, memory mirroring, and memory rank sparing modes are mutually exclusive. Only one
operational memory mode can be enabled on a server, and it is a system-wide setting.