The much more remarkable thing is to consider that that speed of light is also the speed of causality itself. It takes light from the sun about 8 minutes to reach Earth. If the sun suddenly disappeared, we'd still see it shining brightly in the sky, and the Earth would continue revolving around it - all for another 8 minutes until reality finally caught up to us. So we're already computing at a rate on the verge of the speed of reality itself.

It's interesting to consider this paired against how technologically primitive we ostensibly must be, given that digital computers didn't even exist 90 years ago.