Originally Posted by
AlphaC
I wouldn't mess with memory or SOC switching frequency unless they're not stable.
Looks like 226A CPU core current , which means 85°C VRM temperature isn't as alarming (simple calculation, from the graph for IR3551 it's ~3W of heat --> 3W *17.5°C/W = +52.5°C over ambient not taking into account thermal resistance of VRM heatsink to air or the thermal tape) . I'd try to see what sort of clocks you can get at 1.3-1.35V or so, perhaps you will be able to hit 3.9GHz with a massive drop in power. If not, 3.8GHz at 1.2V seems standard for the Ryzen chips , although the ones that make up the Threadripper CPUs should be better.
Once you establish the curve for your chip it will be easier to determine what is optimal.
Power normally goes up with the square of Voltage.