To add to this, undervolting isn't about idle clocks, but temperature and power control under load. I typically only apply them to "turbo" boost clocks, which a

To add to this, undervolting isn't about idle clocks, but temperature and power control under load. I typically only apply them to "turbo" boost clocks, which are a frequent cause of thermal throttling even with water cooling. Intel's 13/14th gen CPUs draw significantly (~70-100W) more power on boost, which can stress the VRMs in otherwise correct pairings and lead to current/EDP or power limit throttling. Lowering the voltage at certain frequencies can allow the system to sustain higher clocks without performance degradation.