The motherboard looks great without heat sinks.
The VRM here is one of the largest and most powerful we have seen on any X399 motherboard, ASUS even moved the socket down to fit in all the power stages. This 16 phase VRM is a beast, and meant for AMD's 2990WX and other high power CPUs. It is controlled by an IR35201, which is relabeled ASP1405I. There are 16 IR3555M, which are 60A PowIRstages, and no doublers are used so each power stages attaches to one PWM channel from the PWM, this improves transient response.
The CPU VRM gets its power from two 8-pin power connectors. The SoC rail gets its power from four IR3555 60A power stages.
Both memory VRMs use the smaller MOSFETs in a dual phase configuration with an ASP1103 PWM controller with integrated drivers.
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