yes, both NH-U12S & NH-U14S DX-4677 can cool up to 500W, there are some tests with W9-3495x.Thanks, Are you using that Noctua? Because its is also the best i found so far, but some how Noctua is refusing to write any TDP ratings. So i was doubting, and trying to figure out if it is only compatible with the socket 4677 or can also really handle 300W.
if you have the 3647 version you can buy the LGA4677 Kit to make them compatible.
cool a 700W CPU with NH-U14S DX 4677