High-Speed Copper Cables in AI Data Centers: DAC, ACC, AEC, and the Road to 800G / 1.6T
As AI clusters scale to tens of thousands of GPUs, communication bandwidth and interconnect efficiency have become as critical as compute. This article explains why copper cables remain the preferred solution for 1–10 m short-reach interconnect, how DAC, ACC, AEC, and AOC map to different distances and budgets, and where the performance limits of high-speed copper really come from—starting from the wire itself.
Sep 18,2026













