Nvidia’s high-powered GPUs, such as the RTX 5090 and 5080, are facing serious melting connector cable issues. Despite previous claims that similar problems had been addressed, recent reports suggest otherwise. To address this issue, hardware testing group Hardware Busters is proposing two solutions: embedding over-temperature or over-current protection circuits in the 12V-2×6 cables used by these GPUs.
According to Aris Mpitziopoulos, CEO and Chief Testing Engineer of Cybenetics, attaching thermistors to the six 12V gauges on the GPU side could cut power if a particular wire exceeds temperature. However, this method only protects against failures originating from the GPU side and may not prevent damage caused by the PSU.
An alternative solution is to attach current shunts to monitor the amperage carried by each wire. If more than 12 amps are detected for over three seconds, it will open the circuit and cut power to the GPU. Mpitziopoulos suggests that having both types of protection on the cables could be the best solution, but this would increase production costs.
While some manufacturers have taken steps to prevent loose connections by adding safety markings or monitoring per-pin current, others argue that the design itself is flawed. They claim that the 12V-2×6 cables are too thin for the power required by these GPUs and recommend thicker cables as a standard solution.
As consumers invest significant amounts in these high-powered GPUs, it’s essential to address this issue promptly. While Nvidia’s profit margins may be affected by implementing new protection measures, it’s crucial to prioritize customer satisfaction and ensure that these expensive GPUs are protected against damage caused by melting connector cables.
Source: https://www.tomshardware.com/pc-components/gpus/melting-rtx-cables-solution-proposed-embed-over-temperature-and-current-protection-on-each-wire