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Flex System x222 Compute Node 13

The following table shows the maximum memory speeds that are achievable based on the installed

DIMMs and the number of DIMMs per channel. The table also shows the maximum memory capacity at

any speed that is supported by the DIMM and the maximum memory capacity at the rated DIMM speed. In

the table, cells that are highlighted with a gray background indicate when the specific combination of

DIMM voltage and number of DIMMs per channel still allows the DIMMs to operate at rated speed.

Note: The quantities and capacities are for one server (that is, half of the x222). The maximums for the

entire x222 (both servers) is double these numbers.

Table 5. Maximum memory speeds

Spec RDIMMs LRDIMMs

Rank Single rank Dual rank Quad rank

Part numbers 49Y1406 (4 GB) 49Y1559 (4 GB) 49Y1407 (4 GB)

49Y1397 (8 GB)

49Y1563 (16 GB)

90Y3178 (4 GB)

90Y3109 (8 GB)

00D4968 (16GB)

90Y3105 (32 GB)

Rated speed 1333 MHz 1600 MHz 1333 MHz 1600 MHz 1333 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

Max quantity* 12 12 12 12 12 12 12 12

Largest DIMM 4 GB 4 GB 4 GB 16 GB 16 GB 16 GB 32 GB 32 GB

Max memory

capacity

48 GB 48 GB 48 GB 192 GB 192 GB 192 GB 384 GB 384 GB

Max memory

at rated speed

48 GB 48 GB 48 GB 192 GB 192 GB 192 GB N/A 192 GB

Maximum operating speed (MHz)

1 DIMM

per channel

1333 MHz 1333 MHz 1600 MHz 1333 MHz 1333 MHz 1600 MHz 1066 MHz 1333 MHz

2 DIMMs

per channel

1333 MHz 1333 MHz 1600 MHz 1333 MHz 1333 MHz 1600 MHz 1066 MHz 1066 MHz

* The maximum quantity that is supported is shown for two installed processors. When one processor is installed,

the maximum quantity that is supported is half of that shown.

Install DIMM fillers in all empty DIMM sockets to ensure proper airflow.

The following memory protection technologies are supported:

ECC



Chipkill (for x4-based memory DIMMs; look for "x4" in the DIMM description)



Memory mirroring



Memory sparing



If memory mirroring is used, then the DIMMs must be installed in pairs (minimum of one pair per

processor), 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 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.

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 31 32

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