https://arstechnica.com/gadgets/2022/11/new-test-shows-loose-rtx-4090-power-connectors-cause-overheating-and-melting/

A few weeks ago, some early adopters of Nvidia's new flagship RTX 4090 GPU began reporting that the cards' power connectors were overheating and melting their plastic casing, sometimes causing damage to the outrageously fast and expensive GPUs.

For Nvidia's part, the company is still looking into the failures. "We continue to investigate the reports, however we don't have further details to share yet," according to an Nvidia rep talking to KitGuru earlier this week. But the YouTubers at the Gamers Nexus channel have been conducting their own in-depth research, and in short, they believe that the problems are mostly being caused by improperly seated power connectors. "Foreign-object debris" inside the connector can also cause problems, but Gamers Nexus believes this kind of damage is much rarer.