Interview In the datacenter biz, power is the product. You either have it or you don't, Chris Sharp tells El Reg .

The CTO of colocation provider Digital Realty explains that without power, there are no servers, no storage, no GPUs, and none of those AI tokens that have Wall Street in a frency. But power isn't only the limiting factor in the US and much of the world, it has also upended the way datacenters are designed and built.

Over the past few years, GPU servers have transitioned from air-cooled machines that didn't require much if any additional work to deploy in a typical datacenter to something more reminiscent of the bespoke HPC clusters built by the likes of Cray, Eviden, or Lenovo.

This change didn't take place overnight. Nvidia's Ampere generation of GPUs introduced in 2020 d

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