Why Copper Still Rules Motherboard Traces in the Age of PCIe 6.0
Why copper still rules the motherboard trace
Copper remains the essential conductor for modern motherboards because its unmatched electrical conductivity and thermal properties are critical for signal integrity in high-speed standards like DDR5 and PCIe 6.0. While alternatives like aluminum exist, copper allows for precise impedance control and efficient heat dissipation, ensuring reliable data transmission and power delivery in dense, high-performance computing environments.
A single mismatched differential pair, off by just a few mils, is enough to unravel the signal integrity budget for an entire memory channel.
- blendergeek
This is a tedious read that is mostly tangents from the headline. The question of “why copper?” is mostly about why not aluminum, silver, or gold. The article touches on aluminum but never bothers to answer why not silver/gold.
This article has no central thesis and is instead a mishmash of random facts about electricity flow through circuit boards (often weirdly specific at that). Don't read this article hoping to find an answer to the question posed in the headline
- Fordec
Money. Whether it's material cost, technological complexity or lower efficiency reasons, regardless, the reason is money.
- Skwid
You can tell it's going to be a quality site when the article begins with a selection of PHP warnings. One link gave me a 410 which was a surprise, until I realised it returns 410 instead of 404 for every missing page.
Please don't invest any time in these articles, the whole site is a bizarre AI generated marketing scam