What we know
A user reported that the power cables for two Nvidia RTX PRO 6000 Blackwell Workstation GPUs showed severe overheating and signs of near-melting. This occurred despite the GPUs being limited to a 500W power draw. The issue involved the newer 12V-2x6 power connector, which appears to still cause problems similar to those seen with the earlier 12VHPWR connector. The user was able to detect the damaged cables before they caused damage to the GPU connectors. Nvidia RTX PRO 6000 cables overheated and nearly melted even with a 500W power limit. The 12V-2x6 connector, intended as a safer replacement, is still exhibiting reliability issues.
Why it matters
The Nvidia RTX PRO 6000 is a high-end workstation GPU built on the Blackwell architecture. Its power delivery relies on the 12V-2x6 connector, which was introduced to replace the 12VHPWR connector that had a history of melting incidents on RTX 4090 cards. This new report raises concerns that the 12V-2x6 connector may not fully resolve the overheating and safety problems, potentially impacting workstation GPU users who depend on stable and safe power connections.
What is still unknown
No independent tests have verified the accuracy or safety of the 12V-2x6 connector under various conditions. Details about firmware updates, supported languages for monitoring tools, or a wider release timeline for affected GPUs are not available. The root cause of the overheating—whether due to connector design, cable quality, or other factors—remains unclear.