RISC-V Design · All levels
Base Integer ISA (RV32I and RV64I) Execution Model: Silicon PPA Impact
Silicon PPA Impact for Base Integer ISA (RV32I and RV64I) Execution Model.
Silicon PPA impact
Silicon PPA Impact for Base Integer ISA (RV32I and RV64I) Execution Model is anchored on Instruction count mix, branch density, and CPI breakdown by ALU, load/store, branch, and control-transfer classes.. 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 - Base Integer ISA (RV32I and RV64I) Execution Model
Instruction count mix, branch density, and CPI breakdown by ALU, load/store, branch, and control-transfer classes.
^
| 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.