IBM Power 11 Memory

Power 11 EM5S: 512 GB DDR5 (2 x 256 GB DDIMM)

EM5S is IBM's 512 GB DDR5 (2 x 256 GB DDIMM). Listed for 9043-MRU.

Adds 512 GB of memory to a Power E1150, the largest memory card pair for that server.

EM5S at a glance

DetailValue
Feature codeEM5S
Name512 GB DDR5 (2 x 256 GB DDIMM)
Part typeMemory
Capacity512 GB
Ddimms2 x 256 GB
TypeDDR5 4U DDIMM
Speed4000 MHz (system limit)
Listed for these Power 11 machine types9043-MRU
Runs with IBM iNo ... IBM i is not supported on the Power E1150.

SG24-8589 Table 2-6 also lists an EMFL row at 256 GB that does not appear in Table 2-4.

Needed to reach the 16 TB E1150 maximum with all four sockets populated.

Before you order EM5S

Adding memory can give a busy Power 11 more room without replacing the server. Match the new modules to the size and type already installed, and check how many memory slots your model has free before you order.

Not sure which Power 11 you have? The Power 11 machine types page shows how to check. Collecting several parts for one quote? Use the Power 11 quote checklist. Or look up another feature code.

Source: IBM Power E1150 Introduction and Technical Overview (SG24-8589-00), Tables 2-4 and 2-6. Always confirm against your server's own configuration before you order.