As one might suspect, "14.7 GHz" is roughly what you get by adding up the individual clock speeds. The overall tone of the video is a little goofy and this was

As one might suspect, "14.7 GHz" is roughly what you get by adding up the individual clock speeds. The overall tone of the video is a little goofy and this was obviously not meant by the creator as a serious performance claim. That being said, it's still a cool project and I'd recommend just watching the video rather than reading third-party articles. It's only about 10 minutes long.