Under Volting?
Under Volting?
In Linus's video, he mentioned that the $1000 PC would require a better motherboard—specifically an X-series—so future upgrades could be easier. He was referring to the need for a more flexible platform when replacing components like the CPU. A good alternative to the B450 gaming plus max would be a system built around an X-series motherboard, such as the ASUS ROG Strix Z690 or MSI MEG, which offer better support for overclocking and future upgrades.
Watch the video at the provided link. The relevant moment starts around 0:45.
The 3900X supports over 125 amps, but the VRM unit isn't designed for such high current output.