IBM System x3300 M4, Product Manual

Page: 13 / 52

IBM System x3300 M4 13
Table 5. Maximum memory speeds (Part 2: RDIMMs)
Specification RDIMM
Rank Single rank Dual rank Quad rank
Part number 49Y1405 (2GB)
49Y1406 (4GB) 49Y1559 (4GB) 49Y1407 (4GB)
49Y1397 (8GB)
49Y1563 (16GB)
90Y3178 (4GB)
90Y3109 (8GB)
00D4968 (16GB)
49Y1400 (16GB)
Rated speed 1333 MHz 1600 MHz 1333 MHz 1600 MHz 1066 MHz
Rated voltage 1.35 V 1.5 V 1.35 V 1.5 V 1.35 V
Operating voltage 1.35 V 1.5 V 1.5 V 1.35 V 1.5 V 1.5 V 1.35 V 1.5 V
Maximum quantity* 12 12 12 12 12 12 12 12
Largest DIMM 4 GB 4 GB 4 GB 16 GB 16 GB 16 GB 16 GB 16 GB
Maximum memory
capacity 48 GB 48 GB 48 GB 192GB 192GB 192GB 192 GB 192 GB
Maximum memory at
rated speed† 48 GB 48 GB 48 GB 192GB 192GB 192GB No support No support
Maximum operating speed (MHz)
1 DIMM per channel 1333 MHz 1333 MHz 1600 MHz 1333 MHz 1333 MHz 1600 MHz 800 MHz 800 MHz
2 DIMMs per channel 1333 MHz 1333 MHz 1600 MHz 1333 MHz 1333 MHz 1600 MHz 800 MHz 800 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.