It's funny how the German sites tend to be so much better at this. I don't follow computerbase, but notebookcheck has some of the most thorough and consistent reviews, and they allow cross-device comparison. They cover news now, too, though I consider that a drawback since it's less focused.

There are a very large number of review sites, Anandtech being one of the first, presumably all following the same sustainability formula, but despite all that effort, consistency, thoroughness, built in tools, and building on aggregated output are the exception.