Glossary
rPerf (Relative Performance)
IBM's relative performance metric for AIX and Linux workloads on Power hardware, the AIX/Linux counterpart to the IBM i-focused CPW metric.
Like CPW, rPerf figures are published per Power model once hardware ships. No rPerf figures exist for Power12.
Related Terms
CPW (Commercial Processing Workload)
IBM's proprietary relative performance benchmark for IBM i commercial workloads, used to compare capacity across Power model tiers and generations.
Power 11
IBM's current, shipping Power processor and server generation, announced July 2025, spanning the entry S1112 through the flagship E1180.