High-density racks

A high-density rack is the steel frame and power-and-cooling backbone built to hold the far hotter, far more power-hungry equipment that modern accelerators demand. It matters because it is where the abstract power-density trade-off becomes physical: frontier systems now ship as pre-integrated, liquid-cooled racks, and a facility either has the electrical feed, floor loading and cooling loop to host them or it does not. That makes the rack the unit at which a data centre's readiness for AI is actually decided.

If dense racks stay scarce or buildings cannot accommodate them, the constraint is brutal and close to binary — facilities that cannot host them are simply cut off from frontier hardware, no matter how much power or floor space they hold. The exposure runs through the ODM system builders that assemble these racks — Wiwynn, Foxconn Industrial Internet, Wistron and Hewlett Packard Enterprise — and the operators such as IREN and CoreWeave that must deploy and power them.