NVIDIA recently announced that it is still looking for a solution to the 12+4 pin power supply melting issue for GeForce RTX 4090 graphics cards. Network “investigators”, in particular the Igor’s Lab resource, have since discovered that these are flagship graphics cards equipped with adapters from Taiwanese companies Astron and NTK, and it seems that users should be wary of one of their products .
Igor Wallossek, creator of Igor’s Lab, noted that two companies produce power supplies for new NVIDIA graphics cards, which differ somewhat in design, although they themselves have the same type of connectors. First, the latches are slightly different, as you can see in the photo below. As a result, the connection to the connection of the adapter from NTK is very complex.
But more importantly, the adapters use contacts with different designs as shown in the images below. The design of the 12VHPWR connector on the NTK adapter uses spring-loaded contacts with a single slot, while the Astron connector has slots on both sides.
As a result, Astron adapters are less durable – they emit higher resistance after 10 connection cycles. The source points out that NVIDIA is conducting its own research to determine exactly how the number of connection cycles of the adapter affects the resistance, which shouldn’t be higher than 2 ohms.
Still, one cannot say with absolute certainty that Astron adapters are of poor quality, as such conclusions can only be drawn from the results of a larger study.
At the same time, Vallossek published a list of known issues related to the 12VHPWR connector, their causes and possible solutions. In short, you need to check the contacts of your video card from time to time, if possible refuse to use adapters in favor of a new power supply unit with a native 12 + 4-pin power cable, and also check the reliability of the connector connection to the connector – there must not be any Gaps arise!