A defective power adapter was found in the NVIDIA GeForce
Hardware

A defective power adapter was found in the NVIDIA GeForce RTX 4080 Super kit – it did not latch, and this is dangerous

For review to the site editor Igor’s Lab A third-party NVIDIA GeForce RTX 4080 Super video card has arrived, equipped with a power adapter with a defective 12V2x6 connector. The problem may not be widespread, but video card owners are advised to pay attention to this aspect – the cable or adapter must be connected with a clear click.

Igor’s Lab journalists studied the problem and found that the PCI-SIG specification does not indicate the exact dimensions of the 12V2x6 connector, which gives manufacturers unnecessary freedom. Perhaps because of this, the power adapter that came with the video card entered without a characteristic click – for the same reason, it came out of the connector relatively easily, since it was not fixed in it securely enough. To confirm the hypothesis about the defect, the author of the review borrowed an adapter that came with a GeForce RTX 4080 Founders Edition video card manufactured by NVIDIA itself, and it was known for sure that it worked.

They tried connecting the defective component to other GeForce RTX 40 series video cards, and the authors achieved a click after about 15–20 attempts. Subsequently, we managed to figure out what was wrong with this specimen – the coating on the contacts. Typically, contacts made of pure electrolytic copper are coated with a nickel layer 2 microns thick, and on top of this is also a 1.5 micron layer of tin. In this case, the nickel coating was much thicker, which did not allow the connector to lock properly.

This is a fairly serious problem that could lead to a sad outcome if it remained undetected for a long time. Any cable or adapter that connects to a video card with a 12+4-pin connector must be inserted until it clicks into place, indicating that it is locked in place. If there is no click, there is a good chance that the cable or adapter needs to be replaced.

About the author

Dylan Harris

Dylan Harris is fascinated by tests and reviews of computer hardware.

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