IBM Power S1124 (9824-42A)
A quad-socket-capable, high-performance 4U scale-out server offering up to 60 Power 11 cores and 8 TB of DDR5 memory, built for enterprises and regional data centers.
The Power S1124 shares its 9824 machine-type family with the S1122 but is built for materially higher per-core throughput. Its EP3X, EP3H, and EP3Y processor options post CPW ratings roughly 3.5x to 10x higher than the equivalent core counts on the S1122, at the cost of stepping up into the P20 and P30 IBM i software tiers.
S1124 at a glance
Processor options
S1124 processor feature codes
| Feature Code | Cores | Clock Speed | CPW | rPerf (SMT8) | Software Tier |
|---|---|---|---|---|---|
| EP3X | 16-core | 3.4-4.2 GHz | 433,000 | 572.9 | P20 |
| EP3H | 24-core | 3.05-4.15 GHz | 649,800 | -- | P30 |
| EP3Y | 30-core | 2.8-3.95 GHz | 812,250 | -- | P30 |
| EP3X | 32-core | 3.4-4.2 GHz | 823,000 | 1,117.1 | P20 |
| EP3H | 48-core | 3.05-4.15 GHz | 1,118,500 | 1,529.0 | P30 |
| EP3Y | 60-core | 2.8-3.95 GHz | 1,345,900 | 1,736.8 | P30 |
Processor table verified against the IBM Power S1124 9824-42A product listing at Midland Information Systems.
Memory, storage, and I/O
Platform configuration limits
| Area | S1124 Detail |
|---|---|
| Memory | 64 GB to 8 TB DDR5 across 32 DDIMM slots |
| Internal storage | Up to 244.8 TB NVMe (16x 15.3 TB) or 102.4 TB (16x 6.4 TB) |
| Direct I/O | 4 direct PCIe slots (Gen4 x16 or Gen5 x8 mix) |
| Expansion | 2 NED24 NVMe expansion drawers, 2 Gen4 I/O expansion drawers (24 slots each) |
S1124 processor options require the P20 or P30 IBM i software tier, one to two steps above the S1122's P10 tier. Confirm current IBM i licensing costs at your target tier before comparing total configuration price against the S1122.
Midland Information Systems cites a 26% improvement in energy efficiency and 22% more rPerf per watt for the S1124 versus its Power10 predecessor, the S1024.
Sources
- IBM Power S1124 9824-42A product listing — Midland Information Systems
- IBM Power 11 Scale-Out Servers Redbook — IBM Redbooks
Reference Documents
Related
IBM Power S1122 (9824-22A)
A dense, dual-socket 2U scale-out server offering up to 60 Power 11 cores and 4 TB of DDR5 memory, IBM's mainstream choice for growing IBM i, AIX, and Linux environments.
IBM Power L1124 (9856-42H)
The Linux-optimized sibling of the S1124: a high-throughput scale-out server for open-source databases and Red Hat OpenShift, with the same DCM processor ceiling as the S1124.
IBM Power S1112 (9242-21B / 9242-21T)
The entry point into the IBM Power 11 generation: a single-socket, half-width 2U rack or tower system built for branch, edge, and smaller IBM i, AIX, and Linux deployments.
IBM Power L1122 (9856-22H)
The Linux-optimized sibling of the S1122: a dual-socket 2U server with the same hardware ceiling but licensed for Linux-first environments, with limited AIX/IBM i core use.
Related Reading
CPW and rPerf Explained: How to Actually Compare Power 11 Processor Options
CPW and rPerf are IBM's relative-performance benchmarks for IBM i and AIX/Linux respectively. Here is how to read them correctly when comparing Power 11 feature codes.
IBM i Licensing and Software Tiers on Power 11: P05, P10, P20, P30 Explained
IBM i software cost on Power 11 is set by the processor feature code's software tier, not the model name. Here is how P05 through P30 map across every current model.
Frequently Asked
What are the IBM Power 11 model numbers?
There are seven current IBM Power 11 models: the entry S1112 (machine type 9242-21B rack, 9242-21T tower), the scale-out S1122 (9824-22A) and S1124 (9824-42A), the Linux-optimized L1122 (9856-22H) and L1124 (9856-42H), and the enterprise scale-up E1150 (9043-MRU) and flagship E1180 (9080-HEU). See our full Power 11 model directory for structured specs on each.
What is the difference between the Power S1122 and S1124?
Both share the 9824 machine-type family and a similar 60-core ceiling, but the S1124's EP3X/EP3H/EP3Y processor options deliver roughly 3.5x to 10x higher CPW than equivalent S1122 core counts, at the cost of stepping up into the P20 or P30 IBM i software tier instead of the S1122's P10. The S1124 also supports double the memory (8 TB vs 4 TB) and internal storage (244.8 TB vs 122.4 TB).