A recent case of damages in a RTX 5090 and its power cable has revived the debate on the problems of the 12VHPWR connector.
The RTX 5090 connectors are suffering the same problem with those of the RTX 4090 in its launch
Although Nvida had assured that they had managed to solve the Greater RTX 4090 problemit seems that the overheating of the connectors has been present again with the RTX 5090.
Just a few days ago, a Reddit user He pointed out that he had begun to perceive a Burned smell While playing Battlefield 5. The surprise of said user was capitalized when he discovered that his graphics card, the cable that was connected to her, and his PSU had suffered quite important damage.
As we can see in the user shared images, Several 12VHPWR cable pins were completely moltenboth on the side of the GPU and the PSU, which has reopened the debate on the reliability of said connector. And seen that several parts of the lining were also melted, this has led to think of a problem that affects the unequal distribution of the current between the cables.
https://www.youtube.com/watch?v=ndmoi1s0zay
Given this, from Der8auer in They wanted analyze In detail the behavior of the 12VHPWR connector under load. Although when the card is running in Irate, there seems to be nothing strange, the situation changes completely when the RTX 5090 was charged.
Testing Star Wars Outlaws, the YouTuber shows how, in just 45 seconds, the card cables reach a very high temperature, reaching the 150ºC on the PSU side and the 90ºC on the side of the GPUwhich clearly indicates an imbalance in the distribution of the current.
Analyzing the reasons why these failures are taking place, it was pointed out that the safety margin of the 12VHPWR connector in the RTX 5090 could be the main reason. Being designed to withstand up to 660W, the Operation margin With the new Nvidia card it is from just 15%while with RTX 4090 it had a 49%margin.
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Therefore, although from Nvidia there was talk at the time that this problem was somewhat caused by a bad connection of the cables, the video seems to make it clear that we are rather facing a consequence of the Bad design of this type of connector.
