How to Read the Power Generation Graph
The Power generation graph is this site's standout dataset: a single structured table comparing IBM Power7 through Power11 on the dimensions that actually matter for a modernization decision -- cores, memory architecture, performance, IBM i OS support, energy efficiency, and lifecycle status.
How to use it
Compare OS ceilings first
Only Power10 and Power11 reach the current IBM i 7.6 release -- start there if reaching the current release matters to you.
Use performance signals, not core counts
rPerf and CPW figures show why a modern replacement needs far fewer cores than a like-for-like swap would suggest.
Check lifecycle status before committing
Power8 is itself already past its own support window on every current model -- factor that in before treating it as a landing generation.
See the full dataset on our Power generation graph page, and our sizing guide for how to translate these generation-level figures into an actual replacement configuration.
Sources
- https://serviceexpress.com/resources/ibm-power-comparison-power8-power9-power10-power11/
- https://www.itjungle.com/2024/12/02/power11-takes-memory-bandwidth-up-to-well-eleven/