That super weak VRM would overheat before half way of 9900K's real chasing Intel's advertised clock speeds max power draw.I was originally thinking of sticking an i9 9900 but read that my mobo would probably overheat and I wouldn’t get full performance out of it.
With wimpy three phases and no cooling, it's basically designed for those 35W TDP CPUs of market PCs.
33% beefier four phase VRM cooled by heatsinks gets pushed really hard by 100W TDP CPUs.