> But the optical chip’s efficiency is compelling. “The game here is that we lowered the energy cost 1,000 times,” Chen said.

The second part of that paragraph is even more important. The optical equivalent is actually ~3x more efficient than the electronical version. With 300x HITOPs you would only consume 300 energy instead of the 1000 energy of the Nvidia version.

Simplified, that means 3x longer battery life, or 3x less heat, or 3x lower energy bill.