So I bought one, and have been using it for a while, and it's a really solid unit. Quite big too though, but it's not a bother. Only problem is I can't test its reliability at high loads, as my PC consumes less than 200w at most.
According to the spec sheet though, in regards to OP, it might be okay to have higher TDP parts than with usual power bricks, because this one tolerates power spikes up to 415w for 3 seconds.
One thing that is puzzling and I wonder how accurate these charts are, but according to the specs, if running on 120v, the max wattage is much lower than if it's being run on 240v.