Cignal AI Video: 448G Is Inevitable—But Far from Easy

At the recent OIF 448G Workshop in Santa Clara, Scott Wilkinson, Lead Analyst at Cignal AI, emphasized the urgency—and complexity—of accelerating development around 448Gbps signaling for AI-driven infrastructure. With AI workloads scaling at breakneck speed, Wilkinson stated that the need for faster electrical and optical interfaces isn’t just emerging—“AI wants the fastest speeds it can get, and it wants them yesterday.”

While earlier transitions in SerDes technology had more clearly defined paths, Wilkinson noted that moving from 200G to 400G, and eventually to 448G electrical interfaces, is substantially more difficult—especially on the electrical side. “It’s not as obvious as it has been in the past,” he remarked, praising OIF for convening early discussions that outpace slower-moving standards bodies. These forums, he stressed, are essential not just for ecosystem coordination, but also for analysts trying to make credible forecasts in the face of competing technologies like Coherent and PAM4.

Wilkinson also highlighted broader market uncertainties, including supply chain constraints and potential tariff impacts—factors that, while external to the technology roadmap, could significantly affect the industry’s pace of innovation. “This is a very critical time for our industry,” he concluded. “A lot of things are going on—and not all of them are things we can control.”

• 448G SerDes is inevitable to support AI’s growing data demands, but the path is more complex than previous transitions.
• Cignal AI sees forums like the OIF workshop as critical to shaping forecasts and understanding technological direction.
• The transition from 200G to 400G+ is particularly challenging on the electrical side.
• Technologies in play include PAM4, Coherent optics, and emerging modulation techniques.
• Tariffs and geopolitical uncertainty are real concerns that could affect rollout timing and cost structures.