The 9043-MRX is the machine type of the IBM Power E1050, the four-socket 4U enterprise system that sits between the Power 10 scale-out line and the node-based E1080. It reaches 96 cores and 16 TB of memory with ten internal NVMe drives, in a single chassis rather than a multi-node frame.

Machine type9043-MRX

ModelIBM Power E1050

Sockets2 to 4

Form factor4U rack

Maximum cores96

Software tierP20 or P30 planning context

The E1050 is the machine type people land on when a scale-out box has run out of sockets but a four-node enterprise frame is more system than the workload or the room can justify. Four sockets in 4U is the whole proposition. It reaches roughly twice the core count of the S1024 without the floor space, power draw and installation complexity of the E1080.

IBM 9043-MRX datasheet

IBM Power E1050 (9043-MRX) published specifications

Specification	Value
Machine type-model	9043-MRX
Generation	IBM Power 10
Sockets	2 to 4
Maximum cores	96
Memory	Up to 16 TB
Internal storage	Up to 10 internal NVMe drives
Operating systems	IBM i, AIX, Linux
Software tier	P20 or P30 planning context

Figures are the published maximums for this machine type. A specific installed system is defined by its processor feature code and activated core count, not by the machine type alone.

Processor feature codes for the 9043-MRX

E1050 processor options

Cores per socket	Maximum cores	Typical clock range (GHz)	Module
12	48	3.35 ... 4.0	DCM
18	72	3.20 ... 4.0	DCM
24	96	2.95 ... 3.90	DCM

Two-socket and three-socket builds are supported, so intermediate core counts between the rows above are valid configurations.

Selected Power 10 models were withdrawn from marketing effective 31 July 2026. Installed systems are unaffected, but sourcing a processor upgrade or an MES expansion now depends on availability for that specific feature code. Confirm current supply before building a plan around adding cores. On a four-socket machine this matters more than usual, because socket-level MES expansion is the normal growth route for an E1050.

How to confirm you have a 9043-MRX

From IBM i

DSPSYSVAL QMODEL returns the model portion and DSPSYSVAL QPRCFEAT returns the processor feature code. Those two values identify a 9043-MRX build exactly, which is what a vendor needs to quote parts or an upgrade.

From AIX, Linux or VIOS

lsconf reports the machine type and model in the first lines of output. prtconf gives the same plus processor implementation and clock speed.

From the HMC

Managed system properties shows machine type-model and serial together with installed against activated cores. On Power 10 those two core numbers frequently differ because of capacity upgrade on demand.

From the bezel

The 9043 prefix is shared with the Power 11 E1150, which is 9043-MRU. The suffix is the only thing separating the two generations in a parts lookup, and modules are not interchangeable.

Where it makes sense in 2026

Large memory, consolidation, and midrange enterprise workloads where a 4U footprint and high core ceiling matter.

Pricing and lifecycle logic

Enterprise quote logic; compare E1150 when planning long support horizon. Confirm software tier, transfer rules, firmware path, support terms, and Power 11 comparison economics before treating the hardware price as final.

Price E1050 against the current generation

Use the IBM Power reseller directory to request a comparable E1050 and E1150 discussion that includes software, support, migration, and growth assumptions.

Sources

Next steps for an E1050

Review processor choices on the Power 10 CPU page, compare the node-based alternative in the E1080 record, compare Power 10 with Power 11, or build a quote checklist.

IBM Power E1050 (9043-MRX)