I believe that is energy savings for the interface exchange from fiber optics (photons) to EC (chips...electrons) transmission. At the point of entry into the Data Center. Not sure what that particular energy % is of the overall energy a DC consumes. I would love to know that number for relevance. Nonetheless, 2-3x higher transmission speed is an entirely different bonus of reducing a BIG bottleneck area for growing scales of cloud computing, AI, metaverse, etc.