HackerTube / Video
How many PCIe Extensions is TOO MANY??
Linus Tech Tips

Linus Tech Tips tests whether chaining many PCIe riser extensions causes loss of GPU performance. They keep adding extensions to see how far the signal will go.
HN cites it as empirical evidence that PCIe cables can be chained to roughly three meters before failing.
7 Hacker News mentions · 2017–2026