I am kinda skeptical on that one. Water-air thermal exchange is not a new problem, if the industry has come to a few designs it's because they are efficient, and they all have fins to start with (even household radiators !). I believe the geniuses at Cray, Intel, IBM, or in the automotive industry or the heavy industry (serval heravy duty tools are watercooled) thought that out already, and a long time ago. So all of sudden a little hobby company comes out with a solution that one-ups everyone ? Alright it could happen, but the odds arent so great...