IBM Express x3300 M4 7382E4G Guida Informativa

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7382E4G

IBM System x3300 M4

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

1.35 V

1.5 V

1.35 V

1.5 V

Maximum quantity*

Largest DIMM

4 GB

16 GB

Maximum memory
capacity

48 GB

192GB

192 GB

Maximum memory at
rated speed†

48 GB

192GB

No support

support

Maximum operating speed (MHz)

1 DIMM per channel

1333 MHz 1333 MHz

1600 MHz

1333 MHz 1333 MHz

1600 MHz

800 MHz

2 DIMMs per channel

1333 MHz 1333 MHz

1600 MHz

1333 MHz 1333 MHz

1600 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.