A workstation equipped with 2 NVIDIA RTX PRO 6000 Blackwell GPUs, worth an estimated $32,000 combined, has raised fresh concerns about the reliability of high power GPU connections after its owner discovered deteriorating cable sleeving near both graphics cards. The system uses a premium Seasonic PRIME TX 1600 Noctua Edition power supply, yet both 12V 2x6 cables displayed visible damage near their connectors. Fortunately, the owner reported no visible melting of the connector housings or damage to the underlying wire insulation.
The incident was documented by Reddit user Doomslayer606, who shared photographs showing frayed, brittle, and deteriorating braided sleeving around individual power wires. The damage appeared on both the GPU and power supply ends, with 1 cable exhibiting substantially worse degradation. Interestingly, the owner explained that the graphics cards were limited to 500W each rather than operating at their maximum 600W power rating. The affected wires reportedly felt stiff and cracked, raising suspicions of localized overheating or uneven electrical current distribution.
However, the visible deterioration does not conclusively establish overheating or a manufacturing defect. The owner also reported repeatedly disconnecting the GPU cables while investigating unrelated PCIe connectivity problems, although the power supply ends were rarely disturbed and reportedly showed even more damage. Without connector temperature measurements, individual conductor current readings, or a physical inspection of the cables, mechanical wear, material degradation, and electrical heating remain possible explanations.
According to NVIDIA's official specifications, each RTX PRO 6000 Blackwell Workstation Edition features 96 GB of GDDR7 memory and a maximum board power of 600W. Together, the 2 graphics cards can demand up to 1,200W before accounting for the CPU and other components. The Seasonic PRIME TX 1600 Noctua Edition provides 1,600W of rated output under supported input conditions, includes 2 native 12V 2x6 power cables, and features 80 PLUS Titanium certification. Its premium specifications do not eliminate the possibility of individual cable or connector problems.
The latest report follows other incidents involving high power NVIDIA graphics cards, including an RTX PRO 6000 connector failure involving ASRock TempGuard protection and a PNY RTX 5090 suffering severe connector damage. Unlike those incidents, the latest workstation has not experienced confirmed connector melting. The owner plans to replace both power cables with compatible alternatives featuring thermal protection, although the precise cause of the deterioration remains unknown.
Seeing deteriorating cable sleeving on a workstation containing approximately $32,000 in graphics hardware is concerning, particularly when the system already uses a premium power supply and operates its GPUs below their maximum power limits.
However, damaged external sleeving should not automatically be considered evidence of an imminent connector failure. The priority should be identifying the cause, inspecting both connector ends, and replacing compromised cables before continuing operation. High power GPU owners should also use manufacturer approved cables and avoid assuming that reducing power limits guarantees protection against electrical connection problems.
More importantly, enthusiasts and professional users should not need additional monitoring accessories simply to feel confident operating expensive graphics hardware. Reliable power delivery, effective protection mechanisms, and greater transparency from manufacturers should be standard expectations across the industry.
Would you trust the existing 12V 2x6 connector with a $16,000 GPU, or should NVIDIA and power supply manufacturers introduce a more robust power delivery standard?
