How much can Core i9 14900HX's performance change between power modes, and when should performance mode be used?

  Performance mode lifts CPU power limits and fan speed when plugged in, useful for benchmarks, rendering, compiling, and high-frame gaming; balanced is fine for office work and meetings.

  The modes differ by vendor, so switch in the manufacturer's control center and time the same task in each. Keep performance mode if the gain is clear; otherwise enjoy the quieter balanced mode.