Will warranty be affected if using your 12VHPWR cable?
No, it will not affect the warranty for using any third-party cables.
Here is a written confirmation from Nvidia being shared online.
Yes, you can use any Third party power cables with our RTX 4090 FE. There will not be any compromise with our warranty for using any Third-party Cables/dongles/connectors.

Below is another Nvidia Official Statements:
Nvidia has been able to test the cables that were RMA'ed by affected customers. In all of the cases a wear line is clearly visible that indicates the cable wasn't fully inserted into the 16-pin power connector. Anybody who has an issue [relating to this] will be taken care of. We'll expedite an RMA. Any issues with the burned cable or GPU, regardless of cable or GPU, it will be processed

Here is a written confirmation from Nvidia being shared online.
Yes, you can use any Third party power cables with our RTX 4090 FE. There will not be any compromise with our warranty for using any Third-party Cables/dongles/connectors.

Below is another Nvidia Official Statements:
Nvidia has been able to test the cables that were RMA'ed by affected customers. In all of the cases a wear line is clearly visible that indicates the cable wasn't fully inserted into the 16-pin power connector. Anybody who has an issue [relating to this] will be taken care of. We'll expedite an RMA. Any issues with the burned cable or GPU, regardless of cable or GPU, it will be processed

Updated on: 24/03/2025
Thank you!