Work out pipeline stage balance instantly with clear inputs, formula shown and shareable results.
A pipeline runs at the speed of its slowest stage plus register overhead, so unbalanced stages waste the difference every cycle in every other stage. Rebalancing logic between stages is usually the cheapest frequency improvement available in a pipelined design.
Pipeline balance
period = max(stage delays) + register overhead; ideal = mean stage delay + overhead
By retiming: moving logic across register boundaries so the stage delays even out. Synthesis tools can do this automatically within limits.
Only if the logic divides evenly. Register overhead is paid per stage, so beyond a point throughput plateaus while latency and power keep rising.