What It Is
AI racks draw far more power than previous server generations. Silicon carbide, gallium nitride and advanced silicon MOSFETs are used in conversion stages that deliver that power efficiently, while thermal design limits how densely accelerators can be packed.
Why It Matters
Power and cooling now shape data-center design as much as the accelerators themselves. Device-level efficiency in power semiconductors feeds directly into rack density, operating cost and the feasibility of large AI clusters.
What to Watch
Follow wide-bandgap adoption in data-center power conversion, higher-voltage distribution inside racks, and how thermal limits interact with accelerator packaging.