{
  "dataset_name": "IBM Power S1112 vs. P05-Tier Generations",
  "description": "CPW, memory bandwidth, internal storage, and PCIe slot figures for the IBM Power S1112 (Power11) compared against every prior IBM i Software Tier P05 system: the Power10 S1014, Power10 S1012, Power9 S914, and Power8 S814.",
  "version": "1.0",
  "publisher": "Power 11 Knowledge Center",
  "publisher_url": "https://power11.as400ibmsystem.com",
  "license": "CC BY 4.0",
  "source_note": "Compiled from IBM published announcement and datasheet figures (July 2026) and Midland Information Systems' published P05-tier technical comparison.",
  "publish_date": "2026-07-16",
  "updated_at": "2026-07-16",
  "units": {
    "cpw": "Commercial Processing Workload (IBM relative-performance metric for IBM i)",
    "memory_bandwidth": "GB/s",
    "storage": "TB"
  },
  "cpw_comparison": [
    { "system": "Power11 S1112", "machine_type_model": "9242-21B", "processor": "EJMT, 4-core, 3.6-4.0 GHz", "cpw_per_core": 29325, "max_p05_cpw": 117300 },
    { "system": "Power10 S1014", "machine_type_model": "9105-41B", "processor": "EPG0, 4-core, 3.0-3.9 GHz", "cpw_per_core": 26575, "max_p05_cpw": 106300 },
    { "system": "Power10 S1012 (4-core)", "machine_type_model": "9028-21B", "processor": "EPG7, 4-core, 3.0-3.9 GHz", "cpw_per_core": 27825, "max_p05_cpw": 111300 },
    { "system": "Power10 S1012 (1-core)", "machine_type_model": "9028-21B", "processor": "EPG3, 1-core, 3.0-3.9 GHz", "cpw_per_core": 29000, "max_p05_cpw": 29000 },
    { "system": "Power9 S914", "machine_type_model": "9009-41A/41G", "processor": "EP50, 4-core, 2.3-3.8 GHz", "cpw_per_core": 13125, "max_p05_cpw": 52500 },
    { "system": "Power8 S814", "machine_type_model": "8286-41A", "processor": "EPXK, 4-core, 3.02 GHz", "cpw_per_core": 9360, "max_p05_cpw": 37440 }
  ],
  "memory_bandwidth_comparison": [
    { "system": "Power11 S1112", "machine_type_model": "9242-21B/9242-21T", "memory_bandwidth_gbps": 256 },
    { "system": "Power10 S1014", "machine_type_model": "9105-41B", "memory_bandwidth_gbps": 204 },
    { "system": "Power10 S1012", "machine_type_model": "9028-21B", "memory_bandwidth_gbps": 102 },
    { "system": "Power9 S914", "machine_type_model": "9009-41A/41G", "memory_bandwidth_gbps": 170 },
    { "system": "Power8 S814", "machine_type_model": "8286-41A", "memory_bandwidth_gbps": 192 }
  ],
  "storage_comparison": [
    { "system": "Power11 S1112", "machine_type_model": "9242-21B/9242-21T", "max_raw_storage_tb": 12.8, "max_mirrored_storage_tb": 6.4 },
    { "system": "Power10 S1014", "machine_type_model": "9105-41B", "max_raw_storage_tb": 6.4, "max_mirrored_storage_tb": 3.2 },
    { "system": "Power10 S1012", "machine_type_model": "9028-21B", "max_raw_storage_tb": 12.8, "max_mirrored_storage_tb": 6.4 },
    { "system": "Power9 S914", "machine_type_model": "9009-41A/41G", "max_raw_storage_tb": 6.4, "max_mirrored_storage_tb": 3.2 },
    { "system": "Power8 S814", "machine_type_model": "8286-41A", "max_raw_storage_tb": 3, "max_mirrored_storage_tb": null }
  ],
  "pcie_slots_comparison": [
    { "system": "Power9 S914", "machine_type_model": "9009-41A/41G", "max_pcie_slots": 8, "slot_detail": "3x Gen4 x16, 5x Gen4 x8" },
    { "system": "Power8 S814", "machine_type_model": "8286-41A", "max_pcie_slots": 8, "slot_detail": "2x x16, 5x x8" },
    { "system": "Power10 S1014", "machine_type_model": "9105-41B", "max_pcie_slots": 5, "slot_detail": "mixed Gen4/Gen5" },
    { "system": "Power11 S1112", "machine_type_model": "9242-21B/9242-21T", "max_pcie_slots": 4, "slot_detail": "2x Gen4 x16, 2x Gen4 x8" },
    { "system": "Power10 S1012", "machine_type_model": "9028-21B", "max_pcie_slots": 4, "slot_detail": "2x Gen4 x16, 2x Gen4 x8, no external I/O drawer support" }
  ],
  "related_reading": "https://power11.as400ibmsystem.com/article/s1112-p05-generational-comparison/"
}