This is probably the worst “branded” power supply we’ve seen in our life:
Its wires are thinner than required (20 AWG vs. 18 AWG).
It can’t deliver its maximum labeled power (450 W), being in fact a 360 W unit (the labeled 450 W is peak power, which can only be pulled for a few seconds).
It explodes if you try to pull more than 80% of its load (360 W).
It doesn’t offer any kind of protection (or it wouldn’t explode).
Its efficiency is very good (i.e., above 80%) if you pull up to 60% of its maximum load (270 W), but if you go over this it drops below 80%