Datasheet

IBM Flex System x240 Compute Node 10

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 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.

The following table lists memory options available for the x240 server. DIMMs can be installed one at a

time, but for performance reasons, install them in sets of four (one for each of the four memory channels).

Table 5. Memory options for the x240

Part number Feature

code

Description Models

where used

Registered DIMM (RDIMM) modules - 1066 MHz and 1333 MHz

49Y1405 8940 2GB (1x2GB, 1Rx8, 1.35V) PC3L-10600 CL9 ECC DDR3 1333MHz LP RDIMM -

49Y1406 8941 4GB (1x4GB, 1Rx4, 1.35V) PC3L-10600 CL9 ECC DDR3 1333MHz LP RDIMM H1x, H2x, G2x,

F2x, D2x, A1x

49Y1407 8942 4GB (1x4GB, 2Rx8, 1.35V) PC3L-10600 CL9ECC DDR3 1333MHz LP RDIMM -

49Y1397 8923 8GB (1x8GB, 2Rx4, 1.35V) PC3L-10600 CL9 ECC DDR3 1333MHz LP RDIMM -

49Y1563 A1QT 16GB (1x16GB, 2Rx4, 1.35V) PC3L-10600 CL9 ECC DDR3 1333MHz LP RDIMM -

49Y1400 8939 16GB (1x16GB, 4Rx4, 1.35V) PC3L-8500 CL7 ECC DDR3 1066MHz LP RDIMM -

Registered DIMM (RDIMM) modules - 1600 MHz

49Y1559 A28Z 4GB (1x4GB, 1Rx4, 1.5V) PC3-12800 CL11 ECC DDR3 1600MHz LP RDIMM R2x, Q2x, N2x,

M2x,

M1x, L2x, J1x

90Y3178 A24L 4GB (1x4GB, 2Rx8, 1.5V) PC3-12800 CL11 ECC DDR3 1600MHz LP RDIMM -

90Y3109 A292 8GB (1x8GB, 2Rx4, 1.5V) PC3-12800 CL11 ECC DDR3 1600MHz LP RDIMM -

00D4968 A2U5 16GB (1x16GB, 2Rx4, 1.5V) PC3-12800 CL11 ECC DDR3 1600MHz LP RDIMM -

Unbuffered DIMM (UDIMM) modules

49Y1404 8648 4GB (1x4GB, 2Rx8, 1.35V) PC3L-10600 CL9 ECC DDR3 1333MHz LP UDIMM -

Load-reduced (LRDIMM) modules

49Y1567 A290 16GB (1x16GB, 4Rx4, 1.35V) PC3L-10600 CL9 ECC DDR3 1333MHz LP

LRDIMM

90Y3105 A291 32GB (1x32GB, 4Rx4, 1.35V) PC3L-10600 CL9 ECC DDR3 1333MHz LP

LRDIMM