Created by a Reddit user custom monitoring program Monitor the connector temperature of graphics cards with 12VHPWR, such as the RTX 4090 (one of the best GPUs) with a reputation for melting. The program utilizes a 10k sensor that measures the temperature of the connector to warn the user and protect the graphics card from potential damage.
According to users, who calls “u/”mamorengo, the only item that must be purchased is a sensor for his program to work. These are available on Amazon for just $8-$10 and most motherboards have headers to support them. For Reddit users, he connected with his Corsair iCUE Commander his Pro.
Malmolego says the program can be programmed to read sensor data and trigger fail-safe commands when the connector temperature reaches “a certain level.” For example, apps can be programmed to lower the GPU power limit (like MSI Afterburner), kill applications or games, or shut down the computer immediately.
Monitor the temperature of the 4090 connector before it melts from r/cable mod
This system doesn’t completely solve meltdown problems that can occur with 16-pin graphics cards, but at least it gives you advance warning and prevents damage. For those of you who still don’t know, the latest 12VHPWR 600W power connector used on most of Nvidia’s graphics cards is known to melt under normal use, especially on its most powerful graphics card, the RTX 4090. I’m here.
Nvidia claims that user error caused the problem, as the 16-pin power connector wasn’t fully plugged in. However, the PCI SIG is already working on a revised version of the 12VHPWR 16-pin connector called the 12V-2×6 connector, which is reported to fix the melting issue that the first version had. By the way, Nvidia applied some of the changes made to his 12V-2×6 connector to his RTX 4070.
In the meantime, before Nvidia switches all its GPUs to this new power connector, or a modified version of the RTX 4070, Mamolengo’s little safety application could still be useful for RTX 40-series owners. Depending on the situation, using this application can potentially prevent damage from legitimate incorrect connector insertion or damage caused by the connector itself. In the latter case, the user can report the high temperature readings to the GPU manufacturer and have the card repaired under warranty.
