Nvidia’s high-end graphics cards, including the RTX 5090 and 5080 series, are experiencing a shocking rate of failure due to overheating issues with their proprietary power cables. The issue stems from the design of the 12V2x6 and 12VHPWR connections, which have led to premature failures and potential fire hazards.
The problem lies in the micro-fit connectors used for these connections, which are only rated for a maximum of 8.5A or 9A, despite the 600W power draw required by some systems. This leaves limited margin for error, making it difficult to ensure reliable operation.
Experts argue that Nvidia’s decision to use such narrow connections was a mistake, and that the company could have improved the reliability of its GPUs using more robust power delivery systems. The issue has led some users to question whether it is worth purchasing these high-end graphics cards at all.
Nvidia has not issued a statement on why its cables are melting, but the company did introduce a revised 12V2x6 cable revision during the lifespan of the 40-series, which extended the pin lengths of the connection and ensured a working connection even if the cable was not seated perfectly. However, this may not be enough to address the underlying design flaws.
In light of these concerns, users considering purchasing the RTX 5080 or 5090 series GPUs may want to consider alternative options or wait for updates that could address these issues.
Source: https://www.tomshardware.com/pc-components/gpus/nvidias-rtx-5090-power-cables-may-be-doomed-to-burn