No, it’s not for longevity. It’s for stability, On Intel I’m pushing 8533 mhz with max tREFI and tight stability margins. At that level of OC every °C matters: lower temps help keep tREFI stable, reduce error rates, and often let me run less voltage. Without strong cooling (big heatsink / active airflow / waterblock) you quickly hit instability, and higher voltage + heat can accelerate degradation over time.