IBM's new Power11 processors promise up to 55% faster cores than their 2017-era Power9 predecessors and claim twice the performance per watt of comparable x86 systems. Key innovations include 'resource groups' for optimized utilization, an energy-saver mode, and unique resiliency features like dedicated hot-spare cores for 99.9999% uptime. The chips also integrate on-die AI accelerators, positioning Power11 as a contender in power-conscious data centers.