NVIDIA’s RTX 5090 graphics cards have been reported that power ports melted. The 12VHPWR power cable problems, which were previously seen in the RTX 4090, were again experienced by the RTX 5090 Founders Edition owners. Two different users detected scars of burns that damage the melting and power supply in the power connections of graphics cards.

NVIDIA RTX 5090’s 12VHPWR power cable was also problematic!

A Reddit user said that after upgrading from RTX 4090 to RTX 5090, Battlefield 5 took the smell of burns and closed his computer. During their controls, both the graphics card and the power supply coincide with burned plastic marks at the ports. He said that the cable he uses belongs to the MODDIY brand that produces customized power cables and that the connection is safely from both ends.

A similar situation was reported by Spanish Youtuber Toro Tocho. Tocho’s RTX 5090 Founders Edition Graphics Card used the power cable provided by PSU manufacturer FSP, while both GPU and PSU connection. Melting also damaged the PCIE 5.0 power connection.

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NVIDIA has first started to use the 12VHPWR power connection on RTX 40 Series graphics cards, and new power supplies that support this standard have been released. The RTX 4090 Founders Edition attracts 450 Watts over the 12VHPWR connection, while the RTX 5090 attracts 575 Watt with a cable supported up to 600 Watt. However, due to the power connection problems in the RTX 4090, the PCI-SIG organization developed a safer version of 12V-2 × 6 connector.

This new connection standard aims to increase reliability with shorter detection pins and longer conductive terminals. According to Corsair’s statement, this change makes it easier to understand whether the cable is connected correctly.

In the RTX 50 series, the NVIDIA has switched to 12V-2 × 6 connector, but the old 12VHPWR cables can still be used. PSU manufacturers Corsair and MSI started to add colorful pins to their cables to show whether the connection was sitting. If yellow or gray pins appear, it means that the cable is not full.

The interesting thing is that Intel and AMD, a member of the PCI-Sig group, do not adopt this standard. AMD’s Radeon 9070 series graphics cards, which will be released soon, still continue to use the traditional 8-PCI PCIe connection. At the end of 2022, Sasa Marinkovic, AMD’s game department manager, implied that this connection carries a risk of fire by making an indirect sharing of 12VHPWR connection.

12VHPWR cables continue to be criticized for some deficiencies in the design. If the users use the cable without fully seating, the connection is at risk of overheating. In fact, Cablemod had to recall after the melting complaints of 12VHPWR GPU power adapters last year. NVIDIA was requested from NVIDIA about the new problems in the RTX 5090 power connections, but the company has not given an official response so far.