The Next Bottleneck After GPUs? Power, Cooling, and Photonic Infrastructure. How Photonic Systems Could Reshape AI Infrastructure and Break the Energy Wall

Rene Grywnow’s 5-Minute Business Punch · Jun 11, 2026 · 5m

We won the compute race, and the prize was a thermodynamics problem. GPUs made performance abundant and, in doing so, relocated the constraint from the chip to the infrastructure around it. Rack densities have climbed from 10–20 kW to 100+ kW in under five years, and auxiliary systems already consume 30–40% of facility energy before useful work begins.

In Part Two of Week 24, I make the case that the next bottleneck after GPUs isn’t a faster GPU, it’s whether you can power and cool what you’ve already committed to build. Photonic co-processors (like q.ant’s Native Processing Server, in…