Copying over my comment from elsewhere:
The person on reddit used a third party cable instead of the one supplied with the device.
https://www.reddit.com/r/nvidia/comments/1ilhfk0/rtx_5090fe_molten_12vhpwr/
It melted on both sides (PSU and GPU), which indicates it was probably the cable being the issue.
12VHPWR is a fucking mess, so please don’t tempt fate with your expensive purchase.
Interesting that it lasted two years with their 4090 with no ill effects. Even though the 5090 is higher power draw, I would suspect the contact resistance of the cable was causing heating even before, just not enough to smell or deform the connectors.
Its fine. Nvidia is introducing these new quick disconnects:
Why not just use a connector that is designed for this much and is already cheap and easily available.
Sitting on my 7900xtx eating popcorn.
