I’m reminded of my year or so of running KnC Miner Neptunes back around 2015. Similarly designed to run too close to the design specification for a 4-pin peripheral plug and socket, they caused several fires, or destroyed the miner or the PSU by melted connectors.

Even running relatively high end Corsair AX1200 supplies didn’t guarantee me a stable run, and at least one set of cables was destroyed that year.

I don’t ever want to run it like that again - the 4090 likely won’t be for me, even if it fits my case.