IBM System x3300 M4 Product Manual page 13

Table 5. Maximum memory speeds (Part 2: RDIMMs)
Specification
Rank
Part number 49Y1405 (2GB)
49Y1406 (4GB)
Rated speed
Rated voltage
Operating voltage 1.35 V
Maximum quantity* 12
Largest DIMM 4 GB
Maximum memory 48 GB
capacity
Maximum memory at 48 GB
rated speed†
Maximum operating speed (MHz)
1 DIMM per channel 1333 MHz 1333 MHz
2 DIMMs per channel 1333 MHz 1333 MHz
* Maximum quantity supported is shown for two processors installed. When one processor is installed, the
maximum quantity supported is a half of what is shown.
† The number here is the most memory that you can have installed that will operate at the rated speed of the
DIMMs. "No support" means that the DIMM cannot operate at its rated speed in this server and operates at a lower
speed even at 1 DPC.
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 (a 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, 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 to be 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 that are installed.
IBM System x3300 M4
Single rank
49Y1559 (4GB)
1333 MHz 1600 MHz
1.35 V 1.5 V
1.5 V 1.5 V
12 12
4 GB 4 GB
48 GB 48 GB
48 GB 48 GB
1600 MHz
1600 MHz
RDIMM
Dual rank
49Y1407 (4GB) 90Y3178 (4GB)
49Y1397 (8GB) 90Y3109 (8GB)
49Y1563 (16GB) 00D4968 (16GB)
1333 MHz 1600 MHz
1.35 V
1.35 V 1.5 V
12 12
16 GB 16 GB 16 GB
192GB 192GB 192GB
192GB 192GB 192GB
1333 MHz 1333 MHz 1600 MHz
1333 MHz 1333 MHz 1600 MHz
Quad rank
49Y1400 (16GB)
1066 MHz
1.5 V 1.35 V
1.5 V 1.35 V 1.5 V
12 12
16 GB 16 GB
192 GB 192 GB
No support No support
800 MHz 800 MHz
800 MHz 800 MHz
12
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