RTX 4090 power connector melts after one month of AI generation loads

Roman53275 · reddit · 2026-10-04

A user reports his RTX 4090's power connector melted after just one month of AI generation workloads, after three years of trouble-free use. He attributes it to sustained load from batch and overnight generations, compounded by not using a dedicated GPU power cable (a 1200W FSP PSU with three PCIe connectors). A cautionary tale for anyone running heavy local AI workloads on aging 12VHPWR-era cards.

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