sortiwa
WTF?! There’s been another melting incident involving a Blackwell graphics card. While the previous cases mostly resulted in damaged RTX 5090 cable connectors and sockets, this latest one saw part of the cable itself melt, and the card in question was an RTX 5070.
X user @ere9w posted videos and images of his brand-new system, which includes a Zotac RTX 5070 graphics card and a Seasonic Focus GX-750 power supply.
Most of the melting reports we’ve seen in the past have involved the connectors, but in this instance, it was part of the cable that melted.
接続端子部分と、ケーブル部分の拡大写真です。 pic.twitter.com/Mwuu7gegex
– ケンケン🐶自作PC依頼受付(クレカ決済◎)@埼玉 (@ere9w) April 10, 2025
VideoCardz writes that the cable was the newer ATX 3.1 design with 12V-2×6 connectors. It appears that a single wire has melted and the connectors on the PSU and GPU sides did not show the same heat damage.
It’s likely that the problem stemmed from the RTX 5070. A close-up photo of the card’s power socket shows that one of the pins is not visible – it has either bent or been pushed back.
追加の動画です、誰かわかる方いたら是非m(_ _)m
ちなみに、グラフィックカードはZOTACのRTX5070そして電源はシーソニックのGX-750です。
もちろん、両方ともに新品の物になります。 pic.twitter.com/fCO2O7o1cD
– ケンケン🐶自作PC依頼受付(クレカ決済◎)@埼玉 (@ere9w) April 10, 2025
Whether this was a manufacturing error such as a loose pin or user error is unclear. Nvidia suggested that the melting problems seen with the RTX 4090s was down to users not fully inserting the power cable connectors into the card socket, leading to excessive heat buildup and the melting and burning problems. But the fact that over 200 of these cards were going to a repair shop every month in 2024, an increase compared to the 100 per month the previous year, suggests otherwise.
双方の末端部分 pic.twitter.com/PoZk4h9MH4
– ケンケン🐶自作PC依頼受付(クレカ決済◎)@埼玉 (@ere9w) April 12, 2025
There have been several cases of RTX 5090 card connectors melting. There was one in February that some blamed on the use of an unofficial third-party cable from Moddiy. It was an ATX 3.0 PCIe 5.0 16-pin to 16-pin model supporting up to 600W with a 12V-2X6 design.
More recently, there was a case where both ends of a 12VHPWR cable, as well as the RTX 5090 and the PSU, all showed burn damage.
There has also been at least one melting incident involving an RTX 5080.
Overclocker Der8auer replicated the setup of one of these RTX 5090 melting incidents using a Corsair 12VHPWR cable. The cable’s connectors reached 150°C on the PSU side and close to 90°C on the GPU side. The problem was an uneven distribution of power: two wires designed to carry 5 to 6 amps of current were carrying more than 20 amps each, while some cables carried as little as 2 amps.
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