Power 11 vs Power 12 Outlook
Power 11 is shipping and documented. Power 12 is not announced. Here is the clean comparison across release timing, specs, manuals, pricing, OS support, AI, chiplets, and upgrade planning.
This is not a spec-for-spec comparison table, because Power 12 does not have published specs. It is a dimension-by-dimension comparison of what IBM has confirmed for Power 11 against what is actually known, stated, projected, or still unknown about the generation after it.
That distinction matters more now because the question is no longer only "when is Power 12 coming?" People are also asking about Power 11 cost, Power 9 upgrades, IBM Power operating systems, iSeries naming, and whether a Power 12 manual exists. The honest answer changes by row.
If the purchase has to happen now
Power 11 is the current documented generation with real models, support terms, and quote inputs. Research current providers in the IBM Power reseller directory or use the IBM Power quote intake. Neither action assumes an unannounced Power 12 specification.
Dimension-by-dimension outlook
Power 12 entries are sourced statements, patterns, or analyst projections -- never invented specifications.
| Dimension | IBM Power 11 (Confirmed) | IBM Power 12 Outlook | Confidence |
|---|---|---|---|
| Release status | First announced July 2025; current family now includes S1112, S1122, S1124, L1122, L1124, E1150, and E1180 | Not announced. "Power 12" is an industry placeholder name, unconfirmed by IBM. | Power 11 is confirmed; Power 12 name and product details are unconfirmed |
| Expected timing | Power 11 generation launched in 2025; S1112 entry system announced July 2026 | Plausible 2027 to 2028 watch window, extrapolated from IBM's Power and IBM i release cadence plus early compiler work | Pattern-based, unconfirmed |
| Entry buyer signal | Power S1112 gives Power 11 a compact one-socket entry system for smaller IBM i, AIX, Linux, branch, and near-edge deployments | The S1112 does not describe Power 12, but it shows IBM is still expanding the current generation while the next one remains private | Power 11 S1112 is direct IBM announcement; Power 12 implication is roadmap reading only |
| Core architecture | Same instruction set architecture as Power 10; evolutionary generation, not a ground-up redesign | Expected shift to a chiplet design with a hub-and-spoke I/O layout, using one I/O hub chiplet surrounded by compute chiplets | IBM-confirmed direction, no product details |
| Process node | Continuity process from Power 10; IBM stated the 7nm-to-5nm jump did not provide enough benefit for the current generation | Mature 5nm or 3nm Samsung process expected by some analysts, possibly with 2.5D interposer packaging | Node philosophy confirmed; specific node and packaging are analyst speculation |
| AI acceleration | On-chip Matrix Math Acceleration; Spyre Accelerator compatibility; S1112 runs local AI inference using Power 11 MMA | Continued and likely expanded AI acceleration, based on Bill Starke's statement that Spyre will be part of the Power 11 portfolio and beyond | Direct IBM statement for continuity; exact scope unconfirmed |
| Memory architecture | DDR5 DDIMM over Open Memory Interface; OMI is already a two-generation IBM Power investment | OMI expected to continue given IBM's incremental-improvement chiplet strategy; no bandwidth or capacity figures published | Pattern-based, unconfirmed |
| Operating systems | Published support exists for IBM i, AIX, Linux, VIOS, and related partitioning requirements by model and firmware level | No Power 12 operating system matrix exists; IBM's prior compatibility philosophy makes continuity likely, but it is not Power 12-specific confirmation | Power 11 OS support confirmed; Power 12 OS support not announced |
| Manuals and Redbooks | IBM Docs and IBM Redbooks exist for current Power 11 systems, including S1112 documentation | No IBM Power 12 manual, Redbook, sales manual entry, or PDF set exists yet | Confirmed absence of published Power 12 documentation |
| Pricing | Quote-based by model, processor feature code, memory, storage, software tier, support, and services | No price exists because no model list, feature codes, software tiers, or availability date exists | Power 11 pricing structure is known; Power 12 pricing is unknown |
| Software and ISA compatibility | Existing IBM i and AIX workloads carry forward from Power 10 when software and firmware levels are supported | IBM's consistent philosophy is cross-generation binary compatibility; no sourced signal suggests a break from that pattern | Philosophy-based; high likelihood, not Power 12-specific confirmation |
| Management console | Power 11 requires current HMC or vHMC support, with details varying by model | Not addressed in any public IBM statement found for this site | Unknown |
What Else Is Worth Knowing
- IBM's July 2026 Power S1112 announcement gives Power 9-era entry buyers a current-generation comparison point before any Power 12 hardware exists.
- IBM has shipped chiplet implementations of the Power line before, so the expected move to chiplets is a return to a known engineering option, not a brand-new architectural gamble.
- IBM's chiplet strategy is framed as incremental generation-over-generation improvement, which is why several Power 11 subsystems such as OMI, ISA continuity, and RAS philosophy are reasonable carry-forward candidates without becoming confirmed Power 12 specs.
- The cleanest documented contrast with AMD is IBM's hub-and-spoke I/O topology versus AMD's centralized-I/O, disaggregated-compute model, driven by IBM's need to minimize latency across large multi-socket enterprise configurations.
Sources: https://www.itjungle.com/2024/11/13/ibm-raises-the-curtain-a-little-on-future-power-processors/, https://www.itjungle.com/2025/04/08/plotting-out-power-systems-and-ibm-i-to-2040-and-beyond/, https://chipsandcheese.com/p/ibm-power-whats-next, https://www.itjungle.com/2025/04/14/z17-mainframes-give-ibm-time-to-ramp-ai-accelerated-power11-systems/, https://newsroom.ibm.com/2026-07-15-ibm-launches-new-power-systems-and-software-built-for-enterprises-to-address-risk%2C-productivity%2C-and-flexibility, https://www.ibm.com/products/power-s1112, https://www.ibm.com/docs/en/power11/9242-21B?topic=9242-21b-power-s1112