RISC-V Design · All levels
Compressed ISA and Extension Landscape Overview: Silicon PPA Impact
Silicon PPA Impact for Compressed ISA and Extension Landscape Overview.
Silicon PPA impact
Silicon PPA Impact for Compressed ISA and Extension Landscape Overview is anchored on Code-size reduction from C extension, extension utilization rate, and performance-per-watt impact by workload segment.. Convert observations into mechanism-backed decisions with explicit ownership.
Frequency gains that increase bubbles may lose net throughput.
Area growth from extension logic must justify workload value.
Power and thermal stability are release gates, not secondary metrics.
PPA trend view
diagram
BEFORE / AFTER TREND - Compressed ISA and Extension Landscape Overview
Code-size reduction from C extension, extension utilization rate, and performance-per-watt impact by workload segment.
^
| o target band
| o after fix + reruns
| o
| o baseline (failing)
+--------------------------------------------------> iteration
capture issue isolate mechanism close + monitor
Use this view to confirm the gain is causal and stable across seeds.