IBM Power 8 Memory

IBM Power 8 31EF ... 128 GB DDR4 CDIMM

31EF is the IBM identifier for a 128 GB DDR4 CDIMM, FRU part number 00VK351. It applies to 8247-42L, 8286-41A, 8286-42A.

Machine type: 8247-42L, 8286-41A, 8286-42A

31EF identifies a 128 GB DDR4 CDIMM on IBM Power 8 systems, carried in IBM parts documentation under FRU part number 00VK351. IBM lists it against 8247-42L, 8286-41A, 8286-42A.

Power 8 memory is not generic server memory. The CDIMM parts in particular are custom IBM modules with the buffer on the DIMM itself, which is why a DDR4 CDIMM cannot be substituted with an off-the-shelf DDR4 module of the same capacity.

Before you order against this number, read the VPD on the machine itself. Power 8 systems were built over several years and a machine that left the factory with one part may well have been serviced since.

Specifications

AttributeDetail
CCIN Or Code31EF
Description128 GB DDR4 CDIMM
Part ClassMemory
Capacity128 GB
Memory TypeDDR4 CDIMM
FRU Part Number00VK351
Applies To8247-42L, 8286-41A, 8286-42A

Identifier, description and FRU part number as published in IBM system parts documentation. Always confirm against the machine VPD and the current IBM parts catalogue before ordering.