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General CPU Discussion / Re: Power11 announced by IBM
« on: July 11, 2025, 04:08:38 pm »
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IBM Power11 E1150 Introduction and Technical Overview
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POWER9 clients upgrading to Power11 can reduce energy consumption by up to 60% for the same performance. Power11 outperforms x86 systems, providing twice the performance per watt. Compared to Power10, Power11 offers up to 33% better performance per watt, with the S1022 showing the largest gain.
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Energy Efficient Mode
Power11 has introduced a new Energy Efficient mode that, when enabled, can reduce energy consumption by up to 30%, with only an approximate 10% reduction in performance. This impact will vary depending on the system and configuration. The power mode can be dynamically established through the HMC GUI, as illustrated in Figure 1-8.
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New P11 Processor Details
Here are some details on the new Power11 processor design:
Technology and Packaging:
– 602mm2 7nm Samsung (18B Devices)
– 18-layer metal stack, enhanced device
– Single-chip or Dual-chip sockets
Computational Capabilities:
– Up to 16 SMT8 Cores (2 MB L2 Cache / core)
– Up to 128 MB L3 cache (low latency non-uniform cache architecture management)
– Enterprise performance focus:
• 3x core performance relative to POWER9
• 2x thread strength relative to POWER9
• 4x L2 cache, 4xMMU/ core relative to POWER9
• 4x crypto engine / core relative to POWER9
– AI computational Focus:
• 2x general SIMD / core relative to POWER9
• 4x matrix SIMD / core relative to POWER9
• New AI Instructions and data types
Robust Data Plane:
– 2 TB/s raw (32GT/s) PowerAXON + OMI signaling
– SMP interconnect for up to 16 sockets
– 2x2 OMI memory bandwidth relative to POWER9
– 64 TB OMI DDR large system memory capacity
– x64 PCIe Gen5 / DCM:2xbandwidth relative to POWER9
IBM Power11 E1150 Introduction and Technical Overview
