There might be a problem with the NvidiaGeForceRTX4090, and it's bad enough that the power connector actually burned up.
It appears that there might be a problem with the 16-pin connector that powers the Nvidia GeForce RTX 4090. According to a Redditor who owns the card, their GPU actually went up in flames, and parts of it have melted as a result.
One of the first reports of power-related issues with the RTX 4090 is here, and it’s a huge one from the get-go. A Redditor, reggie_gakil, posted on the Nvidia subreddit to announce that their Gigabyte GeForce RTX 4090 Gaming OC went up in flames — all due to the 16-pin power connector, they claim. The photos show a melted power connector on the card’s PCB, as well as the power adapter in a similar state. It appears that the main 12 pins, located under the four extra pins, were the cause here. However, it’s hard to speculate at this point. The end result is clear, though, because almost the entire adapter has melted. Needless to say, the card is unusable.
Fitting the cable alongside the enormous RTX 4090 into a less-than-roomy PC case is quite a challenge. As a result, many users end up having to bend the cable in order to even close their case. Unfortunately, this may have a negative effect on the temperatures and could lead to something as bad as what happened to reggie_gakil.