Of course it does. Undervolting is simply finding the lowest voltage your unit can stably work at. The only result of undervolting on modern CPUs is lower temp

Of course it does. Undervolting is simply finding the lowest voltage your unit can stably work at. The only result of undervolting on modern CPUs is lower temperature; performance actually goes up as the processor still aims to hit its set TDP/TPL limits. Lower voltage = higher clocks for longer on all Intel CPUs that can be undervolted. I believe it's the same for new AMDs, but I haven't had the chance to test one. You're basically fine tuning your pet rock - some silicon is higher quality and can do better than the stock voltages that were set for thousands/millions of units out of the factory.