Thank the GPU Gods! A new graphics card power connector to replace the troublesome 12VHPWR connector

Published on December 02, 2025 by Chef Mia

The Peripheral Component Interconnect Special Interest Group (PCI-SIG) has developed a revised specification for the 16-pin 12VHPWR graphics card power connector.

According to a report from Igor's Lab, this revision comes in response to instances of the connector on Nvidia's GeForce RTX 4090 boards overheating and melting under load when subjected to heavy workloads.

The new specification introduces the 12V-2x6 power connector, replacing the problematic 12VHPWR connector while maintaining [[link]] backward compatibility with existing GPUs. Initially, Nvidia attributed the melting incidents to user error, claiming that the 16-pin adaptor was not fully plugged in. However, the revision from PCI-SIG suggests that there may be other factors contributing to the issue.

The 12V-2x6 connector introduces two new power modes, enabling support for 150W and 300W in addition to the existing 450W [[link]] and 600W modes. Each pin of the connector can handle a minimum of 9.2 amps.

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Unfortunately, the release of the new connector will not occur in the immediate future, as the PCI-SIG has not yet finalized the revised specification. However, it is expected that the next generation of GPUs, likely to be launched in 2025, will incorporate the updated connector.

In the meantime, if you currently possess a 12VHPWR connector for your GPU, it is advisable to ensure a minimum clearance of 35mm before bending the cable. PSU vendors recommend a clearance of 40mm.

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