Semi Doped

← Semi Doped1. Aug. · 48 Min.

How Retimers Built an $80B Company: The Story of Astera Labs

How Retimers Built an $80B Company: The Story of Astera Labs1. Aug.48 Min.

A retimer is a small, unglamorous chip. Astera turned it into a high-margin franchise. Austin and Vik cover why copper gives up at PCIe speeds, what a retimer does that a redriver can't, and how one H100 socket became a moat. Then Scorpio: can Astera take switch share from Broadcom? Key Takeaways: - 30cm of PCB trace at Gen 5's 32 GT/s and the signal is gone. Signal integrity is an inside-the-server problem, not just a rack-to-rack one. - Gen 6 swaps NRZ for PAM4. Four voltage levels instead...