Swapping the 12V-2x6 cable cut RTX Pro 6000 gen speed by 20-100% in ComfyUI
elittle1234 · reddit · 2026-10-23
After swapping a Cablemod 12V-2x6 cable for a Corsair thermal-protect one on an RTX Pro 6000, the author saw Wan 2.1 720p generation jump from 78.42s to 180s and Flux 1d (3x 1216x1664) from 48.11s to 60s, with board power capped around 610W vs 650W before — a 5090 was even faster. The author suspects the old cable was pushing the GPU too hard (once smelled burning), and blasts 12V-2x6 as the worst connector ever.
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