DIYer creates ‘RTX 5090 countermeasures’ with cabling spaghetti to mitigate 16-pin meltdowns — system automatically shuts down when the overcurrent protection is triggered

A PC enthusiast has created a DIY “RTX 5090 Countermeasures” system to prevent thermal damage to GPU power connectors. Redditor Electronic_Ear6797 showcased their cabling spaghetti creation in an eye-popping gallery earlier today. However, we think the system, designed to prompt the PSU to power down if an overcurrent event is sensed, would make Rube Goldberg (or Heath Robinson) envious. Others may prefer to consider off-the-shelf power monitoring solutions, such as the WireView GPU series from Thermal Grizzly.

The potential for thermal damage occurring in systems packing high-power graphics cards remains a clear and present danger in mid-2025. A swell of melting power connector reports arrived alongside the Nvidia RTX 4090 in late 2022, and confoundingly continued with the next-gen RTX 5090 launched at the start of this year.

With clearly not enough action being taken by component designers and makers to ensure a PC doesn’t self-combust, some people will feel the need to take things into their own hands. This is the void where Electronic_Ear6797’s cabling countermeasures were conjured up.

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Sadly for us nosy folk, the Redditor hasn’t created reference resources, where we can unpick the concept behind their chaotic-looking countermeasures, look at schematics, and so on. All we have is a handful of images and a system specs list.