IMHO, running at 1.4 volts all the time is bad... The CPU should be dropping the voltage when idling and increasing only under load. The problem is the BIOS settings that AMD provided to the board mfrs is buggy... I know MSi has made some BIOS updates for some of their mobos but not on mine so I still have the same high voltage issue.
My "fix" for this is by clamping down on the CPU speed to 99%. To do this, you go to Control Panel, Power Options, select whatever power mode you want (High, Balanced, Power Saver, Ultimate Performance, etc), Change Plan Settings, Change Advanced Power Settings, Processor Power Management, change Minimum Processor Management to 85% and Maximum Power Management to 99%.
This will restrict your CPU to 99% of its rated speed and drop the CPU speed to 85% when idling (you can even lower this further to about 50% or even 5%. The CPU will just drop to a speed it is comfortable with, never 5%, mine dropped to a minimum of 2.2 GHz for greater power efficiency), so my 3.8 GHz 3900X will be restricted to 3.72 GHz, a loss of 1%. But what it also does is prevents your CPU from going to Turbo mode (in my case, 4.6 GHz). Supposedly a loss in speed of 20% but it's not that bad. AMD rates their CPUs for only one core, e.g. one core is supposed to hit the 4.6 GHz (in reality, the maximum my CPU ever hit is 4.5 GHz on a single core) and the rest usually hits about 4.2 GHz or a 15% loss.
But what this does is drop the CPU idle temp from the 50 degree range to 37-40 degrees. The maximum CPU temp under load dropped from 80-85 degrees to 70-75 degrees. The CPU voltage dropped from 1.375-1.45 Volts to 0.9-1.1 volts (depending on the selected Power Plan). Heat is the killer for CPUs. It will shorten the lifespan of any IC, whether it is a CPU or a LSIC or DSP (TI had supplied a DSP to audio manufacturers several years ago which failed after a year or two because of thermal issues, bricking all AVRs using that DSP which affected Onkyo, Pioneer and Yamaha for a couple of years which they had to repair. Users just had to add a heat sink to the ICs to avoid this issue).
I don't play any games so speed drop did not really bother me. I use my PC for rendering videos... The power restriction only added a minute or two to my work so that was inconsequential. My old i7 6700K workstation would take about 90-120 minutes to render a video (the CPU would run 100% on all cores), now the Ryzen 3900X does the same task at 35-45 minutes, so another couple of minutes was nothing compared to my gains (I also noted that the Ryzen would only run about 80-85% on all cores, which means the speed is no longer CPU dependent), so I think that is why the impact was so minimal.
AMD and the board mfrs are going through teething problems with the new generation of chipsets and CPUs. I am hoping that new BIOS updates will correct the issues (not reaching advertised clock speed, controlling voltage and allowing the CPUs go into low power modes when idle). AMD has acknowledged that there was an issue with the BIOS supplied to the OEMs and that they will provide an update about Sept 10 which should fix the maximum CPU clock speed. Unfortunately, they did not mention anything about the high voltage situation. I am hoping that the new BIOS update will also remedy that.