IBM Power11: everything we know so far

Constantly updated post (based exclusively on SIXE’s opinions and expectations)

The evolution of Power architecture has always sparked curiosity and debate in our community. While IBM strives to balance innovation with market demands in each new generation, results haven’t always met expectations. Now, with Power11 on the horizon, we explore its potential and the lessons IBM might have learned. Plus, discover our “wishlist” for Power11 (if dreams came true…🙄).

Which models might be released?

We expect, as with Power10, 1, 2, 4 and up to 16 socket models. With equivalents to the S1012, S1022, S1024, E1050 or E1080, these future models will be unveiled soon, along with rPerf metrics to understand equivalence to current models and those they will replace

Since 2010, each Power generation has adapted to shifting markets. Today, with competitors like DeepSeek and optimized AI chips, new inference options are emerging—reducing reliance on NVIDIA GPUs. A prime example? The confirmed integration of IBM’s Spyre Accelerator.

Why is the IBM Spyre accelerator important?

Designed for AI workloads, this component could revolutionize generative AI and complex model processing. From modernizing RPG code to enhancing DB2 with AI, and supporting Open Source on ppc64le (Linux on Power) and HPC, its versatility stands out. Notably, Power’s bandwidth between processors, memory, and accelerators could outperform x86/ARM systems at a fraction of the cost of high-end NVIDIA GPUs. Its final impact will depend on IBM’s implementation and real-world benchmarks.

Power11 processor innovations

Power11 delivers three key upgrades:
– Higher clock speeds and 25% more cores per chip than Power10.
– Enhanced reliability, power efficiency, and quantum security (building on Power10’s foundation).

Innovation in processor manufacturing technologies

Power11 leverages Integrated Stacked Capacitor (ISC) technology and improved cooling systems (heat sinks, fans). Together, these boost core density and computational power while optimizing energy use.

DDR5 memory: Better performance

Thnks to DDR5 support, Power11 gains higher bandwidth and efficiency. Importantly, not just a Power11 feature: DDR5 also works with Power10 (and possibly DDR4), allowing memory reuse from older systems. Looking ahead, DDR6 integration in future Power servers could push performance even further.

What role does KVM play in Power11?

Virtualization is critical, and Power11’s KVM integration strengthens its Linux compatibility. Since Power10, KVM has operated within PowerVM, enabling hybrid environments (e.g., mixing Power nodes in OpenStack). While KVM doesn’t replace PowerVM (IBM’s free, feature-rich hypervisor), it offers flexibility for Linux-native tools like Canonical’s LXD. We’ve covered this in depth before.

Conclusion

Power11 isn’t just hardware—it’s IBM’s chance to reconnect with its community. By blending cutting-edge tech with openness, IBM could deliver a versatile platform for today’s flexible, innovation-driven market. If IBM successfully balances these innovations with market demands, Power11 could be a major turning point.

Want to transform your infrastructure with Power? At SIXE, we specialize in Power systems—whether you’re migrating or optimizing existing setups.